2026-03-27 19:18:11.010+09:00 [     7] INFO       - VideoOS.GatewayService.Common.Token.VmsAddressResolver.ResolveIdpAddressesAsync[66]: Identity Provider address set to: http://win7ca62a6be4ce/IDP 
2026-03-27 19:18:11.079+09:00 [     7] INFO       - VideoOS.GatewayService.Common.Token.VmsTokenProvider.Start[62]: Successfully setup temp secret file watcher 
2026-03-27 19:18:11.150+09:00 [     7] ERROR      - VideoOS.GatewayService.Common.Token.VmsTokenProvider.HandleSecret[144]: Secret not found, try doing a re-registration 
2026-03-27 19:18:11.286+09:00 [     7] INFO       - VideoOS.GatewayService.Common.Token.VmsTokenProvider.HandleAndValidateSecret[86]: GetToken failed with exception:VideoOS.GatewayService.Common.Token.VmsTokenProviderException: IDP secret is invalid. Registration of API Gateway may be required
   at VideoOS.GatewayService.Common.Token.VmsTokenProvider.GetTokenAsync(Boolean waitForInitialization)
   at VideoOS.GatewayService.Common.Token.VmsTokenProvider.HandleAndValidateSecret(Uri authorizationServerUri) 
2026-03-27 19:18:12.270+09:00 [     1] WARN       - VideoOS.GatewayService.Helpers.MipSdkProvider.InitializeMultiUserEnvironment[43]: Initialization of MultiUserEnvironment did not succeeded. 
2026-03-27 19:18:12.452+09:00 [    11] DEBUG      - VideoOS.GatewayService.Common.Token.VmsTokenProvider.FileSystemWatcher_Created[218]: File created: idp.tmp 
2026-03-27 19:18:12.456+09:00 [    11] DEBUG      - VideoOS.GatewayService.Common.Token.VmsTokenProvider.FileSystemWatcher_Changed[224]: File changed: idp.tmp 
2026-03-27 19:18:12.478+09:00 [     7] INFO       - VideoOS.GatewayService.Common.Token.VmsAddressResolver.ResolveIdpAddressesAsync[66]: Identity Provider address set to: http://win7ca62a6be4ce/IDP 
2026-03-27 19:18:12.499+09:00 [     7] INFO       - VideoOS.GatewayService.Common.Token.VmsTokenProvider.HandleSecret[98]: Successfully convert temp secret to a secret encrypted with current user credentials 
2026-03-27 19:18:12.501+09:00 [     7] ERROR      - VideoOS.GatewayService.Common.Token.VmsTokenProvider.GetClientRegistrationId[174]: Invalid client registration id not ready. Retrying... 
2026-03-27 19:18:12.702+09:00 [     7] ERROR      - VideoOS.GatewayService.Common.Token.VmsTokenProvider.GetClientRegistrationId[174]: Invalid client registration id not ready. Retrying... 
2026-03-27 19:18:13.193+09:00 [     1] DEBUG      - VideoOS.GatewayService.Startup.Configure[97]: Configure application 
2026-03-27 19:18:13.193+09:00 [     1] INFO       - VideoOS.GatewayService.Startup.Configure[108]: UseHttpsRedirect: False 
2026-03-27 19:18:13.193+09:00 [     1] INFO       - VideoOS.GatewayService.Startup.Configure[115]: Use CORS: True 
2026-03-27 19:18:13.193+09:00 [     1] DEBUG      - VideoOS.GatewayService.Startup.Configure[118]: Using CORS 
2026-03-27 19:18:13.193+09:00 [     1] DEBUG      - VideoOS.GatewayService.Startup.Configure[126]: Setting up cores allowedOrigins:* allowedheaders:* allowedmethods:* 
2026-03-27 19:18:13.265+09:00 [     7] INFO       - VideoOS.GatewayService.Common.Token.VmsTokenProvider.HandleAndValidateSecret[82]: Successfully created/updated token cache 
2026-03-27 19:18:13.265+09:00 [     7] DEBUG      - VideoOS.GatewayService.Common.Token.VmsTokenProvider.HandleSecretChanged[260]: idp.tmp: handled and validated succesfully 
2026-03-27 19:18:13.357+09:00 [     1] INFO       - Microsoft.Hosting.Lifetime.Application started. Press Ctrl+C to shut down. 
2026-03-27 19:18:13.361+09:00 [     1] INFO       - Microsoft.Hosting.Lifetime.Hosting environment: Production 
2026-03-27 19:18:13.361+09:00 [     1] INFO       - Microsoft.Hosting.Lifetime.Content root path: C:\Program Files\Milestone\XProtect API Gateway 
2026-03-27 19:18:43.373+09:00 [     5] INFO       - VideoOS.GatewayService.HostedServices.DynamicProxyConfigurationService.UpdateInMemoryConfiguration[144]: Cluster 'eventserver' resolved: http://win7ca62a6be4ce:22332/ 
2026-03-27 19:19:12.451+09:00 [     5] DEBUG      - VideoOS.WebRTC.SessionHandler.InitiateSession[70]: Initiating session for deviceId: cbabf9bd-fbc2-40c4-83ea-339525035756 
2026-03-27 19:19:12.454+09:00 [     5] ERROR      - VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus[89]: MultiUserEnvironment has not been initialized. 
2026-03-27 19:19:12.454+09:00 [     5] ERROR      - VideoOS.GatewayService.Controllers.SessionController.Post[95]: Failed to handle 'Post' SessionController System.Exception: MultiUserEnvironment not initialized.
   at VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus()
   at VideoOS.WebRTC.SessionHandler.InitiateSession(Guid deviceId, String token, IEnumerable`1 iceCandidateServers, Nullable`1 streamId, Nullable`1 playbackTime, Nullable`1 skipGaps, Nullable`1 speed, Boolean includeAudio)
   at VideoOS.GatewayService.Controllers.SessionController.Post(String authorization, WebRTCSession value)
2026-03-27 19:19:12.477+09:00 [     5] DEBUG      - VideoOS.WebRTC.SessionHandler.InitiateSession[70]: Initiating session for deviceId: 144059bb-e458-4c89-bee7-e82b809edc48 
2026-03-27 19:19:12.477+09:00 [     5] ERROR      - VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus[89]: MultiUserEnvironment has not been initialized. 
2026-03-27 19:19:12.477+09:00 [     5] ERROR      - VideoOS.GatewayService.Controllers.SessionController.Post[95]: Failed to handle 'Post' SessionController System.Exception: MultiUserEnvironment not initialized.
   at VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus()
   at VideoOS.WebRTC.SessionHandler.InitiateSession(Guid deviceId, String token, IEnumerable`1 iceCandidateServers, Nullable`1 streamId, Nullable`1 playbackTime, Nullable`1 skipGaps, Nullable`1 speed, Boolean includeAudio)
   at VideoOS.GatewayService.Controllers.SessionController.Post(String authorization, WebRTCSession value)
2026-03-27 19:19:12.490+09:00 [     5] DEBUG      - VideoOS.WebRTC.SessionHandler.InitiateSession[70]: Initiating session for deviceId: efa10b58-883c-4f2d-8d67-314b88a101e8 
2026-03-27 19:19:12.490+09:00 [     5] ERROR      - VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus[89]: MultiUserEnvironment has not been initialized. 
2026-03-27 19:19:12.490+09:00 [     5] ERROR      - VideoOS.GatewayService.Controllers.SessionController.Post[95]: Failed to handle 'Post' SessionController System.Exception: MultiUserEnvironment not initialized.
   at VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus()
   at VideoOS.WebRTC.SessionHandler.InitiateSession(Guid deviceId, String token, IEnumerable`1 iceCandidateServers, Nullable`1 streamId, Nullable`1 playbackTime, Nullable`1 skipGaps, Nullable`1 speed, Boolean includeAudio)
   at VideoOS.GatewayService.Controllers.SessionController.Post(String authorization, WebRTCSession value)
2026-03-27 19:19:12.501+09:00 [     5] DEBUG      - VideoOS.WebRTC.SessionHandler.InitiateSession[70]: Initiating session for deviceId: f131f2e3-fd8d-457a-8d6d-858418301b1d 
2026-03-27 19:19:12.501+09:00 [     5] ERROR      - VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus[89]: MultiUserEnvironment has not been initialized. 
2026-03-27 19:19:12.501+09:00 [     5] ERROR      - VideoOS.GatewayService.Controllers.SessionController.Post[95]: Failed to handle 'Post' SessionController System.Exception: MultiUserEnvironment not initialized.
   at VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus()
   at VideoOS.WebRTC.SessionHandler.InitiateSession(Guid deviceId, String token, IEnumerable`1 iceCandidateServers, Nullable`1 streamId, Nullable`1 playbackTime, Nullable`1 skipGaps, Nullable`1 speed, Boolean includeAudio)
   at VideoOS.GatewayService.Controllers.SessionController.Post(String authorization, WebRTCSession value)
2026-03-27 19:19:12.501+09:00 [     5] DEBUG      - VideoOS.WebRTC.SessionHandler.InitiateSession[70]: Initiating session for deviceId: 94bcb387-0e58-47bd-a76a-cbfe2e7abc86 
2026-03-27 19:19:12.501+09:00 [     5] ERROR      - VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus[89]: MultiUserEnvironment has not been initialized. 
2026-03-27 19:19:12.501+09:00 [     5] ERROR      - VideoOS.GatewayService.Controllers.SessionController.Post[95]: Failed to handle 'Post' SessionController System.Exception: MultiUserEnvironment not initialized.
   at VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus()
   at VideoOS.WebRTC.SessionHandler.InitiateSession(Guid deviceId, String token, IEnumerable`1 iceCandidateServers, Nullable`1 streamId, Nullable`1 playbackTime, Nullable`1 skipGaps, Nullable`1 speed, Boolean includeAudio)
   at VideoOS.GatewayService.Controllers.SessionController.Post(String authorization, WebRTCSession value)
2026-03-27 19:19:49.260+09:00 [    26] DEBUG      - VideoOS.WebRTC.SessionHandler.InitiateSession[70]: Initiating session for deviceId: 144059bb-e458-4c89-bee7-e82b809edc48 
2026-03-27 19:19:49.260+09:00 [    26] ERROR      - VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus[89]: MultiUserEnvironment has not been initialized. 
2026-03-27 19:19:49.260+09:00 [    26] ERROR      - VideoOS.GatewayService.Controllers.SessionController.Post[95]: Failed to handle 'Post' SessionController System.Exception: MultiUserEnvironment not initialized.
   at VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus()
   at VideoOS.WebRTC.SessionHandler.InitiateSession(Guid deviceId, String token, IEnumerable`1 iceCandidateServers, Nullable`1 streamId, Nullable`1 playbackTime, Nullable`1 skipGaps, Nullable`1 speed, Boolean includeAudio)
   at VideoOS.GatewayService.Controllers.SessionController.Post(String authorization, WebRTCSession value)
2026-03-27 19:19:49.271+09:00 [    26] DEBUG      - VideoOS.WebRTC.SessionHandler.InitiateSession[70]: Initiating session for deviceId: efa10b58-883c-4f2d-8d67-314b88a101e8 
2026-03-27 19:19:49.271+09:00 [    26] ERROR      - VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus[89]: MultiUserEnvironment has not been initialized. 
2026-03-27 19:19:49.271+09:00 [    26] ERROR      - VideoOS.GatewayService.Controllers.SessionController.Post[95]: Failed to handle 'Post' SessionController System.Exception: MultiUserEnvironment not initialized.
   at VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus()
   at VideoOS.WebRTC.SessionHandler.InitiateSession(Guid deviceId, String token, IEnumerable`1 iceCandidateServers, Nullable`1 streamId, Nullable`1 playbackTime, Nullable`1 skipGaps, Nullable`1 speed, Boolean includeAudio)
   at VideoOS.GatewayService.Controllers.SessionController.Post(String authorization, WebRTCSession value)
2026-03-27 19:19:49.283+09:00 [    26] DEBUG      - VideoOS.WebRTC.SessionHandler.InitiateSession[70]: Initiating session for deviceId: cbabf9bd-fbc2-40c4-83ea-339525035756 
2026-03-27 19:19:49.283+09:00 [    26] ERROR      - VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus[89]: MultiUserEnvironment has not been initialized. 
2026-03-27 19:19:49.283+09:00 [    26] ERROR      - VideoOS.GatewayService.Controllers.SessionController.Post[95]: Failed to handle 'Post' SessionController System.Exception: MultiUserEnvironment not initialized.
   at VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus()
   at VideoOS.WebRTC.SessionHandler.InitiateSession(Guid deviceId, String token, IEnumerable`1 iceCandidateServers, Nullable`1 streamId, Nullable`1 playbackTime, Nullable`1 skipGaps, Nullable`1 speed, Boolean includeAudio)
   at VideoOS.GatewayService.Controllers.SessionController.Post(String authorization, WebRTCSession value)
2026-03-27 19:19:49.283+09:00 [    26] DEBUG      - VideoOS.WebRTC.SessionHandler.InitiateSession[70]: Initiating session for deviceId: f131f2e3-fd8d-457a-8d6d-858418301b1d 
2026-03-27 19:19:49.283+09:00 [    26] ERROR      - VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus[89]: MultiUserEnvironment has not been initialized. 
2026-03-27 19:19:49.283+09:00 [    26] ERROR      - VideoOS.GatewayService.Controllers.SessionController.Post[95]: Failed to handle 'Post' SessionController System.Exception: MultiUserEnvironment not initialized.
   at VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus()
   at VideoOS.WebRTC.SessionHandler.InitiateSession(Guid deviceId, String token, IEnumerable`1 iceCandidateServers, Nullable`1 streamId, Nullable`1 playbackTime, Nullable`1 skipGaps, Nullable`1 speed, Boolean includeAudio)
   at VideoOS.GatewayService.Controllers.SessionController.Post(String authorization, WebRTCSession value)
2026-03-27 19:19:49.304+09:00 [    26] DEBUG      - VideoOS.WebRTC.SessionHandler.InitiateSession[70]: Initiating session for deviceId: 94bcb387-0e58-47bd-a76a-cbfe2e7abc86 
2026-03-27 19:19:49.304+09:00 [    26] ERROR      - VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus[89]: MultiUserEnvironment has not been initialized. 
2026-03-27 19:19:49.304+09:00 [    26] ERROR      - VideoOS.GatewayService.Controllers.SessionController.Post[95]: Failed to handle 'Post' SessionController System.Exception: MultiUserEnvironment not initialized.
   at VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus()
   at VideoOS.WebRTC.SessionHandler.InitiateSession(Guid deviceId, String token, IEnumerable`1 iceCandidateServers, Nullable`1 streamId, Nullable`1 playbackTime, Nullable`1 skipGaps, Nullable`1 speed, Boolean includeAudio)
   at VideoOS.GatewayService.Controllers.SessionController.Post(String authorization, WebRTCSession value)
2026-03-27 19:19:51.328+09:00 [     5] DEBUG      - VideoOS.WebRTC.SessionHandler.InitiateSession[70]: Initiating session for deviceId: 94bcb387-0e58-47bd-a76a-cbfe2e7abc86 
2026-03-27 19:19:51.329+09:00 [     5] ERROR      - VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus[89]: MultiUserEnvironment has not been initialized. 
2026-03-27 19:19:51.329+09:00 [     5] ERROR      - VideoOS.GatewayService.Controllers.SessionController.Post[95]: Failed to handle 'Post' SessionController System.Exception: MultiUserEnvironment not initialized.
   at VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus()
   at VideoOS.WebRTC.SessionHandler.InitiateSession(Guid deviceId, String token, IEnumerable`1 iceCandidateServers, Nullable`1 streamId, Nullable`1 playbackTime, Nullable`1 skipGaps, Nullable`1 speed, Boolean includeAudio)
   at VideoOS.GatewayService.Controllers.SessionController.Post(String authorization, WebRTCSession value)
2026-03-27 19:19:51.329+09:00 [     5] DEBUG      - VideoOS.WebRTC.SessionHandler.InitiateSession[70]: Initiating session for deviceId: efa10b58-883c-4f2d-8d67-314b88a101e8 
2026-03-27 19:19:51.329+09:00 [     5] ERROR      - VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus[89]: MultiUserEnvironment has not been initialized. 
2026-03-27 19:19:51.329+09:00 [     5] ERROR      - VideoOS.GatewayService.Controllers.SessionController.Post[95]: Failed to handle 'Post' SessionController System.Exception: MultiUserEnvironment not initialized.
   at VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus()
   at VideoOS.WebRTC.SessionHandler.InitiateSession(Guid deviceId, String token, IEnumerable`1 iceCandidateServers, Nullable`1 streamId, Nullable`1 playbackTime, Nullable`1 skipGaps, Nullable`1 speed, Boolean includeAudio)
   at VideoOS.GatewayService.Controllers.SessionController.Post(String authorization, WebRTCSession value)
2026-03-27 19:19:51.354+09:00 [     5] DEBUG      - VideoOS.WebRTC.SessionHandler.InitiateSession[70]: Initiating session for deviceId: 144059bb-e458-4c89-bee7-e82b809edc48 
2026-03-27 19:19:51.354+09:00 [     5] ERROR      - VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus[89]: MultiUserEnvironment has not been initialized. 
2026-03-27 19:19:51.354+09:00 [     5] ERROR      - VideoOS.GatewayService.Controllers.SessionController.Post[95]: Failed to handle 'Post' SessionController System.Exception: MultiUserEnvironment not initialized.
   at VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus()
   at VideoOS.WebRTC.SessionHandler.InitiateSession(Guid deviceId, String token, IEnumerable`1 iceCandidateServers, Nullable`1 streamId, Nullable`1 playbackTime, Nullable`1 skipGaps, Nullable`1 speed, Boolean includeAudio)
   at VideoOS.GatewayService.Controllers.SessionController.Post(String authorization, WebRTCSession value)
2026-03-27 19:19:51.366+09:00 [     5] DEBUG      - VideoOS.WebRTC.SessionHandler.InitiateSession[70]: Initiating session for deviceId: f131f2e3-fd8d-457a-8d6d-858418301b1d 
2026-03-27 19:19:51.366+09:00 [     5] ERROR      - VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus[89]: MultiUserEnvironment has not been initialized. 
2026-03-27 19:19:51.366+09:00 [     5] ERROR      - VideoOS.GatewayService.Controllers.SessionController.Post[95]: Failed to handle 'Post' SessionController System.Exception: MultiUserEnvironment not initialized.
   at VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus()
   at VideoOS.WebRTC.SessionHandler.InitiateSession(Guid deviceId, String token, IEnumerable`1 iceCandidateServers, Nullable`1 streamId, Nullable`1 playbackTime, Nullable`1 skipGaps, Nullable`1 speed, Boolean includeAudio)
   at VideoOS.GatewayService.Controllers.SessionController.Post(String authorization, WebRTCSession value)
2026-03-27 19:19:51.376+09:00 [     5] DEBUG      - VideoOS.WebRTC.SessionHandler.InitiateSession[70]: Initiating session for deviceId: cbabf9bd-fbc2-40c4-83ea-339525035756 
2026-03-27 19:19:51.376+09:00 [     5] ERROR      - VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus[89]: MultiUserEnvironment has not been initialized. 
2026-03-27 19:19:51.376+09:00 [     5] ERROR      - VideoOS.GatewayService.Controllers.SessionController.Post[95]: Failed to handle 'Post' SessionController System.Exception: MultiUserEnvironment not initialized.
   at VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus()
   at VideoOS.WebRTC.SessionHandler.InitiateSession(Guid deviceId, String token, IEnumerable`1 iceCandidateServers, Nullable`1 streamId, Nullable`1 playbackTime, Nullable`1 skipGaps, Nullable`1 speed, Boolean includeAudio)
   at VideoOS.GatewayService.Controllers.SessionController.Post(String authorization, WebRTCSession value)
2026-03-27 19:19:54.015+09:00 [    26] DEBUG      - VideoOS.WebRTC.SessionHandler.InitiateSession[70]: Initiating session for deviceId: 94bcb387-0e58-47bd-a76a-cbfe2e7abc86 
2026-03-27 19:19:54.015+09:00 [    26] ERROR      - VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus[89]: MultiUserEnvironment has not been initialized. 
2026-03-27 19:19:54.015+09:00 [    26] ERROR      - VideoOS.GatewayService.Controllers.SessionController.Post[95]: Failed to handle 'Post' SessionController System.Exception: MultiUserEnvironment not initialized.
   at VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus()
   at VideoOS.WebRTC.SessionHandler.InitiateSession(Guid deviceId, String token, IEnumerable`1 iceCandidateServers, Nullable`1 streamId, Nullable`1 playbackTime, Nullable`1 skipGaps, Nullable`1 speed, Boolean includeAudio)
   at VideoOS.GatewayService.Controllers.SessionController.Post(String authorization, WebRTCSession value)
2026-03-27 19:19:54.027+09:00 [    26] DEBUG      - VideoOS.WebRTC.SessionHandler.InitiateSession[70]: Initiating session for deviceId: efa10b58-883c-4f2d-8d67-314b88a101e8 
2026-03-27 19:19:54.027+09:00 [    26] ERROR      - VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus[89]: MultiUserEnvironment has not been initialized. 
2026-03-27 19:19:54.027+09:00 [    26] ERROR      - VideoOS.GatewayService.Controllers.SessionController.Post[95]: Failed to handle 'Post' SessionController System.Exception: MultiUserEnvironment not initialized.
   at VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus()
   at VideoOS.WebRTC.SessionHandler.InitiateSession(Guid deviceId, String token, IEnumerable`1 iceCandidateServers, Nullable`1 streamId, Nullable`1 playbackTime, Nullable`1 skipGaps, Nullable`1 speed, Boolean includeAudio)
   at VideoOS.GatewayService.Controllers.SessionController.Post(String authorization, WebRTCSession value)
2026-03-27 19:19:54.038+09:00 [    26] DEBUG      - VideoOS.WebRTC.SessionHandler.InitiateSession[70]: Initiating session for deviceId: cbabf9bd-fbc2-40c4-83ea-339525035756 
2026-03-27 19:19:54.038+09:00 [    26] ERROR      - VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus[89]: MultiUserEnvironment has not been initialized. 
2026-03-27 19:19:54.038+09:00 [    26] ERROR      - VideoOS.GatewayService.Controllers.SessionController.Post[95]: Failed to handle 'Post' SessionController System.Exception: MultiUserEnvironment not initialized.
   at VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus()
   at VideoOS.WebRTC.SessionHandler.InitiateSession(Guid deviceId, String token, IEnumerable`1 iceCandidateServers, Nullable`1 streamId, Nullable`1 playbackTime, Nullable`1 skipGaps, Nullable`1 speed, Boolean includeAudio)
   at VideoOS.GatewayService.Controllers.SessionController.Post(String authorization, WebRTCSession value)
2026-03-27 19:19:54.038+09:00 [    26] DEBUG      - VideoOS.WebRTC.SessionHandler.InitiateSession[70]: Initiating session for deviceId: 144059bb-e458-4c89-bee7-e82b809edc48 
2026-03-27 19:19:54.048+09:00 [    26] ERROR      - VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus[89]: MultiUserEnvironment has not been initialized. 
2026-03-27 19:19:54.048+09:00 [    26] ERROR      - VideoOS.GatewayService.Controllers.SessionController.Post[95]: Failed to handle 'Post' SessionController System.Exception: MultiUserEnvironment not initialized.
   at VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus()
   at VideoOS.WebRTC.SessionHandler.InitiateSession(Guid deviceId, String token, IEnumerable`1 iceCandidateServers, Nullable`1 streamId, Nullable`1 playbackTime, Nullable`1 skipGaps, Nullable`1 speed, Boolean includeAudio)
   at VideoOS.GatewayService.Controllers.SessionController.Post(String authorization, WebRTCSession value)
2026-03-27 19:19:54.048+09:00 [    26] DEBUG      - VideoOS.WebRTC.SessionHandler.InitiateSession[70]: Initiating session for deviceId: f131f2e3-fd8d-457a-8d6d-858418301b1d 
2026-03-27 19:19:54.048+09:00 [    26] ERROR      - VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus[89]: MultiUserEnvironment has not been initialized. 
2026-03-27 19:19:54.048+09:00 [    26] ERROR      - VideoOS.GatewayService.Controllers.SessionController.Post[95]: Failed to handle 'Post' SessionController System.Exception: MultiUserEnvironment not initialized.
   at VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus()
   at VideoOS.WebRTC.SessionHandler.InitiateSession(Guid deviceId, String token, IEnumerable`1 iceCandidateServers, Nullable`1 streamId, Nullable`1 playbackTime, Nullable`1 skipGaps, Nullable`1 speed, Boolean includeAudio)
   at VideoOS.GatewayService.Controllers.SessionController.Post(String authorization, WebRTCSession value)
2026-03-27 19:20:19.844+09:00 [    28] DEBUG      - VideoOS.WebRTC.SessionHandler.InitiateSession[70]: Initiating session for deviceId: efa10b58-883c-4f2d-8d67-314b88a101e8 
2026-03-27 19:20:19.845+09:00 [    28] ERROR      - VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus[89]: MultiUserEnvironment has not been initialized. 
2026-03-27 19:20:19.845+09:00 [    28] ERROR      - VideoOS.GatewayService.Controllers.SessionController.Post[95]: Failed to handle 'Post' SessionController System.Exception: MultiUserEnvironment not initialized.
   at VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus()
   at VideoOS.WebRTC.SessionHandler.InitiateSession(Guid deviceId, String token, IEnumerable`1 iceCandidateServers, Nullable`1 streamId, Nullable`1 playbackTime, Nullable`1 skipGaps, Nullable`1 speed, Boolean includeAudio)
   at VideoOS.GatewayService.Controllers.SessionController.Post(String authorization, WebRTCSession value)
2026-03-27 19:20:19.845+09:00 [    28] DEBUG      - VideoOS.WebRTC.SessionHandler.InitiateSession[70]: Initiating session for deviceId: 94bcb387-0e58-47bd-a76a-cbfe2e7abc86 
2026-03-27 19:20:19.845+09:00 [    28] ERROR      - VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus[89]: MultiUserEnvironment has not been initialized. 
2026-03-27 19:20:19.845+09:00 [    28] ERROR      - VideoOS.GatewayService.Controllers.SessionController.Post[95]: Failed to handle 'Post' SessionController System.Exception: MultiUserEnvironment not initialized.
   at VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus()
   at VideoOS.WebRTC.SessionHandler.InitiateSession(Guid deviceId, String token, IEnumerable`1 iceCandidateServers, Nullable`1 streamId, Nullable`1 playbackTime, Nullable`1 skipGaps, Nullable`1 speed, Boolean includeAudio)
   at VideoOS.GatewayService.Controllers.SessionController.Post(String authorization, WebRTCSession value)
2026-03-27 19:20:19.867+09:00 [    28] DEBUG      - VideoOS.WebRTC.SessionHandler.InitiateSession[70]: Initiating session for deviceId: 144059bb-e458-4c89-bee7-e82b809edc48 
2026-03-27 19:20:19.867+09:00 [    28] ERROR      - VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus[89]: MultiUserEnvironment has not been initialized. 
2026-03-27 19:20:19.867+09:00 [    28] ERROR      - VideoOS.GatewayService.Controllers.SessionController.Post[95]: Failed to handle 'Post' SessionController System.Exception: MultiUserEnvironment not initialized.
   at VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus()
   at VideoOS.WebRTC.SessionHandler.InitiateSession(Guid deviceId, String token, IEnumerable`1 iceCandidateServers, Nullable`1 streamId, Nullable`1 playbackTime, Nullable`1 skipGaps, Nullable`1 speed, Boolean includeAudio)
   at VideoOS.GatewayService.Controllers.SessionController.Post(String authorization, WebRTCSession value)
2026-03-27 19:20:19.878+09:00 [    28] DEBUG      - VideoOS.WebRTC.SessionHandler.InitiateSession[70]: Initiating session for deviceId: f131f2e3-fd8d-457a-8d6d-858418301b1d 
2026-03-27 19:20:19.878+09:00 [    28] ERROR      - VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus[89]: MultiUserEnvironment has not been initialized. 
2026-03-27 19:20:19.878+09:00 [    28] ERROR      - VideoOS.GatewayService.Controllers.SessionController.Post[95]: Failed to handle 'Post' SessionController System.Exception: MultiUserEnvironment not initialized.
   at VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus()
   at VideoOS.WebRTC.SessionHandler.InitiateSession(Guid deviceId, String token, IEnumerable`1 iceCandidateServers, Nullable`1 streamId, Nullable`1 playbackTime, Nullable`1 skipGaps, Nullable`1 speed, Boolean includeAudio)
   at VideoOS.GatewayService.Controllers.SessionController.Post(String authorization, WebRTCSession value)
2026-03-27 19:20:19.878+09:00 [    28] DEBUG      - VideoOS.WebRTC.SessionHandler.InitiateSession[70]: Initiating session for deviceId: cbabf9bd-fbc2-40c4-83ea-339525035756 
2026-03-27 19:20:19.878+09:00 [    28] ERROR      - VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus[89]: MultiUserEnvironment has not been initialized. 
2026-03-27 19:20:19.878+09:00 [    28] ERROR      - VideoOS.GatewayService.Controllers.SessionController.Post[95]: Failed to handle 'Post' SessionController System.Exception: MultiUserEnvironment not initialized.
   at VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus()
   at VideoOS.WebRTC.SessionHandler.InitiateSession(Guid deviceId, String token, IEnumerable`1 iceCandidateServers, Nullable`1 streamId, Nullable`1 playbackTime, Nullable`1 skipGaps, Nullable`1 speed, Boolean includeAudio)
   at VideoOS.GatewayService.Controllers.SessionController.Post(String authorization, WebRTCSession value)
2026-03-27 19:20:22.750+09:00 [    23] DEBUG      - VideoOS.WebRTC.SessionHandler.InitiateSession[70]: Initiating session for deviceId: f131f2e3-fd8d-457a-8d6d-858418301b1d 
2026-03-27 19:20:22.751+09:00 [    23] ERROR      - VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus[89]: MultiUserEnvironment has not been initialized. 
2026-03-27 19:20:22.751+09:00 [    23] ERROR      - VideoOS.GatewayService.Controllers.SessionController.Post[95]: Failed to handle 'Post' SessionController System.Exception: MultiUserEnvironment not initialized.
   at VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus()
   at VideoOS.WebRTC.SessionHandler.InitiateSession(Guid deviceId, String token, IEnumerable`1 iceCandidateServers, Nullable`1 streamId, Nullable`1 playbackTime, Nullable`1 skipGaps, Nullable`1 speed, Boolean includeAudio)
   at VideoOS.GatewayService.Controllers.SessionController.Post(String authorization, WebRTCSession value)
2026-03-27 19:20:22.751+09:00 [    23] DEBUG      - VideoOS.WebRTC.SessionHandler.InitiateSession[70]: Initiating session for deviceId: 144059bb-e458-4c89-bee7-e82b809edc48 
2026-03-27 19:20:22.751+09:00 [    23] ERROR      - VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus[89]: MultiUserEnvironment has not been initialized. 
2026-03-27 19:20:22.751+09:00 [    23] ERROR      - VideoOS.GatewayService.Controllers.SessionController.Post[95]: Failed to handle 'Post' SessionController System.Exception: MultiUserEnvironment not initialized.
   at VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus()
   at VideoOS.WebRTC.SessionHandler.InitiateSession(Guid deviceId, String token, IEnumerable`1 iceCandidateServers, Nullable`1 streamId, Nullable`1 playbackTime, Nullable`1 skipGaps, Nullable`1 speed, Boolean includeAudio)
   at VideoOS.GatewayService.Controllers.SessionController.Post(String authorization, WebRTCSession value)
2026-03-27 19:20:22.778+09:00 [    23] DEBUG      - VideoOS.WebRTC.SessionHandler.InitiateSession[70]: Initiating session for deviceId: cbabf9bd-fbc2-40c4-83ea-339525035756 
2026-03-27 19:20:22.778+09:00 [    23] ERROR      - VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus[89]: MultiUserEnvironment has not been initialized. 
2026-03-27 19:20:22.778+09:00 [    23] ERROR      - VideoOS.GatewayService.Controllers.SessionController.Post[95]: Failed to handle 'Post' SessionController System.Exception: MultiUserEnvironment not initialized.
   at VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus()
   at VideoOS.WebRTC.SessionHandler.InitiateSession(Guid deviceId, String token, IEnumerable`1 iceCandidateServers, Nullable`1 streamId, Nullable`1 playbackTime, Nullable`1 skipGaps, Nullable`1 speed, Boolean includeAudio)
   at VideoOS.GatewayService.Controllers.SessionController.Post(String authorization, WebRTCSession value)
2026-03-27 19:20:22.789+09:00 [    23] DEBUG      - VideoOS.WebRTC.SessionHandler.InitiateSession[70]: Initiating session for deviceId: efa10b58-883c-4f2d-8d67-314b88a101e8 
2026-03-27 19:20:22.789+09:00 [    23] ERROR      - VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus[89]: MultiUserEnvironment has not been initialized. 
2026-03-27 19:20:22.789+09:00 [    23] ERROR      - VideoOS.GatewayService.Controllers.SessionController.Post[95]: Failed to handle 'Post' SessionController System.Exception: MultiUserEnvironment not initialized.
   at VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus()
   at VideoOS.WebRTC.SessionHandler.InitiateSession(Guid deviceId, String token, IEnumerable`1 iceCandidateServers, Nullable`1 streamId, Nullable`1 playbackTime, Nullable`1 skipGaps, Nullable`1 speed, Boolean includeAudio)
   at VideoOS.GatewayService.Controllers.SessionController.Post(String authorization, WebRTCSession value)
2026-03-27 19:20:22.800+09:00 [    23] DEBUG      - VideoOS.WebRTC.SessionHandler.InitiateSession[70]: Initiating session for deviceId: 94bcb387-0e58-47bd-a76a-cbfe2e7abc86 
2026-03-27 19:20:22.800+09:00 [    23] ERROR      - VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus[89]: MultiUserEnvironment has not been initialized. 
2026-03-27 19:20:22.800+09:00 [    23] ERROR      - VideoOS.GatewayService.Controllers.SessionController.Post[95]: Failed to handle 'Post' SessionController System.Exception: MultiUserEnvironment not initialized.
   at VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus()
   at VideoOS.WebRTC.SessionHandler.InitiateSession(Guid deviceId, String token, IEnumerable`1 iceCandidateServers, Nullable`1 streamId, Nullable`1 playbackTime, Nullable`1 skipGaps, Nullable`1 speed, Boolean includeAudio)
   at VideoOS.GatewayService.Controllers.SessionController.Post(String authorization, WebRTCSession value)
2026-03-27 19:20:24.823+09:00 [    26] DEBUG      - VideoOS.WebRTC.SessionHandler.InitiateSession[70]: Initiating session for deviceId: f131f2e3-fd8d-457a-8d6d-858418301b1d 
2026-03-27 19:20:24.823+09:00 [    26] ERROR      - VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus[89]: MultiUserEnvironment has not been initialized. 
2026-03-27 19:20:24.823+09:00 [    26] ERROR      - VideoOS.GatewayService.Controllers.SessionController.Post[95]: Failed to handle 'Post' SessionController System.Exception: MultiUserEnvironment not initialized.
   at VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus()
   at VideoOS.WebRTC.SessionHandler.InitiateSession(Guid deviceId, String token, IEnumerable`1 iceCandidateServers, Nullable`1 streamId, Nullable`1 playbackTime, Nullable`1 skipGaps, Nullable`1 speed, Boolean includeAudio)
   at VideoOS.GatewayService.Controllers.SessionController.Post(String authorization, WebRTCSession value)
2026-03-27 19:20:24.834+09:00 [    26] DEBUG      - VideoOS.WebRTC.SessionHandler.InitiateSession[70]: Initiating session for deviceId: 94bcb387-0e58-47bd-a76a-cbfe2e7abc86 
2026-03-27 19:20:24.834+09:00 [    26] ERROR      - VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus[89]: MultiUserEnvironment has not been initialized. 
2026-03-27 19:20:24.834+09:00 [    26] ERROR      - VideoOS.GatewayService.Controllers.SessionController.Post[95]: Failed to handle 'Post' SessionController System.Exception: MultiUserEnvironment not initialized.
   at VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus()
   at VideoOS.WebRTC.SessionHandler.InitiateSession(Guid deviceId, String token, IEnumerable`1 iceCandidateServers, Nullable`1 streamId, Nullable`1 playbackTime, Nullable`1 skipGaps, Nullable`1 speed, Boolean includeAudio)
   at VideoOS.GatewayService.Controllers.SessionController.Post(String authorization, WebRTCSession value)
2026-03-27 19:20:24.845+09:00 [    26] DEBUG      - VideoOS.WebRTC.SessionHandler.InitiateSession[70]: Initiating session for deviceId: cbabf9bd-fbc2-40c4-83ea-339525035756 
2026-03-27 19:20:24.845+09:00 [    26] ERROR      - VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus[89]: MultiUserEnvironment has not been initialized. 
2026-03-27 19:20:24.845+09:00 [    26] ERROR      - VideoOS.GatewayService.Controllers.SessionController.Post[95]: Failed to handle 'Post' SessionController System.Exception: MultiUserEnvironment not initialized.
   at VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus()
   at VideoOS.WebRTC.SessionHandler.InitiateSession(Guid deviceId, String token, IEnumerable`1 iceCandidateServers, Nullable`1 streamId, Nullable`1 playbackTime, Nullable`1 skipGaps, Nullable`1 speed, Boolean includeAudio)
   at VideoOS.GatewayService.Controllers.SessionController.Post(String authorization, WebRTCSession value)
2026-03-27 19:20:24.845+09:00 [    26] DEBUG      - VideoOS.WebRTC.SessionHandler.InitiateSession[70]: Initiating session for deviceId: 144059bb-e458-4c89-bee7-e82b809edc48 
2026-03-27 19:20:24.845+09:00 [    26] ERROR      - VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus[89]: MultiUserEnvironment has not been initialized. 
2026-03-27 19:20:24.845+09:00 [    26] ERROR      - VideoOS.GatewayService.Controllers.SessionController.Post[95]: Failed to handle 'Post' SessionController System.Exception: MultiUserEnvironment not initialized.
   at VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus()
   at VideoOS.WebRTC.SessionHandler.InitiateSession(Guid deviceId, String token, IEnumerable`1 iceCandidateServers, Nullable`1 streamId, Nullable`1 playbackTime, Nullable`1 skipGaps, Nullable`1 speed, Boolean includeAudio)
   at VideoOS.GatewayService.Controllers.SessionController.Post(String authorization, WebRTCSession value)
2026-03-27 19:20:24.867+09:00 [    26] DEBUG      - VideoOS.WebRTC.SessionHandler.InitiateSession[70]: Initiating session for deviceId: efa10b58-883c-4f2d-8d67-314b88a101e8 
2026-03-27 19:20:24.867+09:00 [    26] ERROR      - VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus[89]: MultiUserEnvironment has not been initialized. 
2026-03-27 19:20:24.867+09:00 [    26] ERROR      - VideoOS.GatewayService.Controllers.SessionController.Post[95]: Failed to handle 'Post' SessionController System.Exception: MultiUserEnvironment not initialized.
   at VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus()
   at VideoOS.WebRTC.SessionHandler.InitiateSession(Guid deviceId, String token, IEnumerable`1 iceCandidateServers, Nullable`1 streamId, Nullable`1 playbackTime, Nullable`1 skipGaps, Nullable`1 speed, Boolean includeAudio)
   at VideoOS.GatewayService.Controllers.SessionController.Post(String authorization, WebRTCSession value)
2026-03-27 19:20:27.626+09:00 [    23] DEBUG      - VideoOS.WebRTC.SessionHandler.InitiateSession[70]: Initiating session for deviceId: f131f2e3-fd8d-457a-8d6d-858418301b1d 
2026-03-27 19:20:27.626+09:00 [    23] ERROR      - VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus[89]: MultiUserEnvironment has not been initialized. 
2026-03-27 19:20:27.626+09:00 [    23] ERROR      - VideoOS.GatewayService.Controllers.SessionController.Post[95]: Failed to handle 'Post' SessionController System.Exception: MultiUserEnvironment not initialized.
   at VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus()
   at VideoOS.WebRTC.SessionHandler.InitiateSession(Guid deviceId, String token, IEnumerable`1 iceCandidateServers, Nullable`1 streamId, Nullable`1 playbackTime, Nullable`1 skipGaps, Nullable`1 speed, Boolean includeAudio)
   at VideoOS.GatewayService.Controllers.SessionController.Post(String authorization, WebRTCSession value)
2026-03-27 19:20:27.643+09:00 [    23] DEBUG      - VideoOS.WebRTC.SessionHandler.InitiateSession[70]: Initiating session for deviceId: cbabf9bd-fbc2-40c4-83ea-339525035756 
2026-03-27 19:20:27.643+09:00 [    23] ERROR      - VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus[89]: MultiUserEnvironment has not been initialized. 
2026-03-27 19:20:27.643+09:00 [    23] ERROR      - VideoOS.GatewayService.Controllers.SessionController.Post[95]: Failed to handle 'Post' SessionController System.Exception: MultiUserEnvironment not initialized.
   at VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus()
   at VideoOS.WebRTC.SessionHandler.InitiateSession(Guid deviceId, String token, IEnumerable`1 iceCandidateServers, Nullable`1 streamId, Nullable`1 playbackTime, Nullable`1 skipGaps, Nullable`1 speed, Boolean includeAudio)
   at VideoOS.GatewayService.Controllers.SessionController.Post(String authorization, WebRTCSession value)
2026-03-27 19:20:27.643+09:00 [    23] DEBUG      - VideoOS.WebRTC.SessionHandler.InitiateSession[70]: Initiating session for deviceId: efa10b58-883c-4f2d-8d67-314b88a101e8 
2026-03-27 19:20:27.643+09:00 [    23] ERROR      - VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus[89]: MultiUserEnvironment has not been initialized. 
2026-03-27 19:20:27.643+09:00 [    23] ERROR      - VideoOS.GatewayService.Controllers.SessionController.Post[95]: Failed to handle 'Post' SessionController System.Exception: MultiUserEnvironment not initialized.
   at VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus()
   at VideoOS.WebRTC.SessionHandler.InitiateSession(Guid deviceId, String token, IEnumerable`1 iceCandidateServers, Nullable`1 streamId, Nullable`1 playbackTime, Nullable`1 skipGaps, Nullable`1 speed, Boolean includeAudio)
   at VideoOS.GatewayService.Controllers.SessionController.Post(String authorization, WebRTCSession value)
2026-03-27 19:20:27.666+09:00 [    23] DEBUG      - VideoOS.WebRTC.SessionHandler.InitiateSession[70]: Initiating session for deviceId: 94bcb387-0e58-47bd-a76a-cbfe2e7abc86 
2026-03-27 19:20:27.666+09:00 [    23] ERROR      - VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus[89]: MultiUserEnvironment has not been initialized. 
2026-03-27 19:20:27.666+09:00 [    23] ERROR      - VideoOS.GatewayService.Controllers.SessionController.Post[95]: Failed to handle 'Post' SessionController System.Exception: MultiUserEnvironment not initialized.
   at VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus()
   at VideoOS.WebRTC.SessionHandler.InitiateSession(Guid deviceId, String token, IEnumerable`1 iceCandidateServers, Nullable`1 streamId, Nullable`1 playbackTime, Nullable`1 skipGaps, Nullable`1 speed, Boolean includeAudio)
   at VideoOS.GatewayService.Controllers.SessionController.Post(String authorization, WebRTCSession value)
2026-03-27 19:20:27.676+09:00 [    23] DEBUG      - VideoOS.WebRTC.SessionHandler.InitiateSession[70]: Initiating session for deviceId: 144059bb-e458-4c89-bee7-e82b809edc48 
2026-03-27 19:20:27.676+09:00 [    23] ERROR      - VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus[89]: MultiUserEnvironment has not been initialized. 
2026-03-27 19:20:27.676+09:00 [    23] ERROR      - VideoOS.GatewayService.Controllers.SessionController.Post[95]: Failed to handle 'Post' SessionController System.Exception: MultiUserEnvironment not initialized.
   at VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus()
   at VideoOS.WebRTC.SessionHandler.InitiateSession(Guid deviceId, String token, IEnumerable`1 iceCandidateServers, Nullable`1 streamId, Nullable`1 playbackTime, Nullable`1 skipGaps, Nullable`1 speed, Boolean includeAudio)
   at VideoOS.GatewayService.Controllers.SessionController.Post(String authorization, WebRTCSession value)
2026-03-27 19:23:33.024+09:00 [    31] DEBUG      - VideoOS.WebRTC.SessionHandler.InitiateSession[70]: Initiating session for deviceId: cbabf9bd-fbc2-40c4-83ea-339525035756 
2026-03-27 19:23:33.024+09:00 [    31] ERROR      - VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus[89]: MultiUserEnvironment has not been initialized. 
2026-03-27 19:23:33.024+09:00 [    31] ERROR      - VideoOS.GatewayService.Controllers.SessionController.Post[95]: Failed to handle 'Post' SessionController System.Exception: MultiUserEnvironment not initialized.
   at VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus()
   at VideoOS.WebRTC.SessionHandler.InitiateSession(Guid deviceId, String token, IEnumerable`1 iceCandidateServers, Nullable`1 streamId, Nullable`1 playbackTime, Nullable`1 skipGaps, Nullable`1 speed, Boolean includeAudio)
   at VideoOS.GatewayService.Controllers.SessionController.Post(String authorization, WebRTCSession value)
2026-03-27 19:23:33.040+09:00 [    31] DEBUG      - VideoOS.WebRTC.SessionHandler.InitiateSession[70]: Initiating session for deviceId: 94bcb387-0e58-47bd-a76a-cbfe2e7abc86 
2026-03-27 19:23:33.040+09:00 [    31] ERROR      - VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus[89]: MultiUserEnvironment has not been initialized. 
2026-03-27 19:23:33.040+09:00 [    31] ERROR      - VideoOS.GatewayService.Controllers.SessionController.Post[95]: Failed to handle 'Post' SessionController System.Exception: MultiUserEnvironment not initialized.
   at VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus()
   at VideoOS.WebRTC.SessionHandler.InitiateSession(Guid deviceId, String token, IEnumerable`1 iceCandidateServers, Nullable`1 streamId, Nullable`1 playbackTime, Nullable`1 skipGaps, Nullable`1 speed, Boolean includeAudio)
   at VideoOS.GatewayService.Controllers.SessionController.Post(String authorization, WebRTCSession value)
2026-03-27 19:23:33.051+09:00 [    31] DEBUG      - VideoOS.WebRTC.SessionHandler.InitiateSession[70]: Initiating session for deviceId: 144059bb-e458-4c89-bee7-e82b809edc48 
2026-03-27 19:23:33.051+09:00 [    31] ERROR      - VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus[89]: MultiUserEnvironment has not been initialized. 
2026-03-27 19:23:33.051+09:00 [    31] ERROR      - VideoOS.GatewayService.Controllers.SessionController.Post[95]: Failed to handle 'Post' SessionController System.Exception: MultiUserEnvironment not initialized.
   at VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus()
   at VideoOS.WebRTC.SessionHandler.InitiateSession(Guid deviceId, String token, IEnumerable`1 iceCandidateServers, Nullable`1 streamId, Nullable`1 playbackTime, Nullable`1 skipGaps, Nullable`1 speed, Boolean includeAudio)
   at VideoOS.GatewayService.Controllers.SessionController.Post(String authorization, WebRTCSession value)
2026-03-27 19:23:33.051+09:00 [    31] DEBUG      - VideoOS.WebRTC.SessionHandler.InitiateSession[70]: Initiating session for deviceId: f131f2e3-fd8d-457a-8d6d-858418301b1d 
2026-03-27 19:23:33.051+09:00 [    31] ERROR      - VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus[89]: MultiUserEnvironment has not been initialized. 
2026-03-27 19:23:33.051+09:00 [    31] ERROR      - VideoOS.GatewayService.Controllers.SessionController.Post[95]: Failed to handle 'Post' SessionController System.Exception: MultiUserEnvironment not initialized.
   at VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus()
   at VideoOS.WebRTC.SessionHandler.InitiateSession(Guid deviceId, String token, IEnumerable`1 iceCandidateServers, Nullable`1 streamId, Nullable`1 playbackTime, Nullable`1 skipGaps, Nullable`1 speed, Boolean includeAudio)
   at VideoOS.GatewayService.Controllers.SessionController.Post(String authorization, WebRTCSession value)
2026-03-27 19:23:33.073+09:00 [    31] DEBUG      - VideoOS.WebRTC.SessionHandler.InitiateSession[70]: Initiating session for deviceId: efa10b58-883c-4f2d-8d67-314b88a101e8 
2026-03-27 19:23:33.073+09:00 [    31] ERROR      - VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus[89]: MultiUserEnvironment has not been initialized. 
2026-03-27 19:23:33.073+09:00 [    31] ERROR      - VideoOS.GatewayService.Controllers.SessionController.Post[95]: Failed to handle 'Post' SessionController System.Exception: MultiUserEnvironment not initialized.
   at VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus()
   at VideoOS.WebRTC.SessionHandler.InitiateSession(Guid deviceId, String token, IEnumerable`1 iceCandidateServers, Nullable`1 streamId, Nullable`1 playbackTime, Nullable`1 skipGaps, Nullable`1 speed, Boolean includeAudio)
   at VideoOS.GatewayService.Controllers.SessionController.Post(String authorization, WebRTCSession value)
2026-03-27 19:24:36.085+09:00 [    33] DEBUG      - VideoOS.WebRTC.SessionHandler.InitiateSession[70]: Initiating session for deviceId: f131f2e3-fd8d-457a-8d6d-858418301b1d 
2026-03-27 19:24:36.085+09:00 [    33] ERROR      - VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus[89]: MultiUserEnvironment has not been initialized. 
2026-03-27 19:24:36.085+09:00 [    33] ERROR      - VideoOS.GatewayService.Controllers.SessionController.Post[95]: Failed to handle 'Post' SessionController System.Exception: MultiUserEnvironment not initialized.
   at VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus()
   at VideoOS.WebRTC.SessionHandler.InitiateSession(Guid deviceId, String token, IEnumerable`1 iceCandidateServers, Nullable`1 streamId, Nullable`1 playbackTime, Nullable`1 skipGaps, Nullable`1 speed, Boolean includeAudio)
   at VideoOS.GatewayService.Controllers.SessionController.Post(String authorization, WebRTCSession value)
2026-03-27 19:24:36.085+09:00 [    33] DEBUG      - VideoOS.WebRTC.SessionHandler.InitiateSession[70]: Initiating session for deviceId: cbabf9bd-fbc2-40c4-83ea-339525035756 
2026-03-27 19:24:36.085+09:00 [    33] ERROR      - VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus[89]: MultiUserEnvironment has not been initialized. 
2026-03-27 19:24:36.085+09:00 [    33] ERROR      - VideoOS.GatewayService.Controllers.SessionController.Post[95]: Failed to handle 'Post' SessionController System.Exception: MultiUserEnvironment not initialized.
   at VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus()
   at VideoOS.WebRTC.SessionHandler.InitiateSession(Guid deviceId, String token, IEnumerable`1 iceCandidateServers, Nullable`1 streamId, Nullable`1 playbackTime, Nullable`1 skipGaps, Nullable`1 speed, Boolean includeAudio)
   at VideoOS.GatewayService.Controllers.SessionController.Post(String authorization, WebRTCSession value)
2026-03-27 19:24:36.107+09:00 [    33] DEBUG      - VideoOS.WebRTC.SessionHandler.InitiateSession[70]: Initiating session for deviceId: 144059bb-e458-4c89-bee7-e82b809edc48 
2026-03-27 19:24:36.107+09:00 [    33] ERROR      - VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus[89]: MultiUserEnvironment has not been initialized. 
2026-03-27 19:24:36.107+09:00 [    33] ERROR      - VideoOS.GatewayService.Controllers.SessionController.Post[95]: Failed to handle 'Post' SessionController System.Exception: MultiUserEnvironment not initialized.
   at VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus()
   at VideoOS.WebRTC.SessionHandler.InitiateSession(Guid deviceId, String token, IEnumerable`1 iceCandidateServers, Nullable`1 streamId, Nullable`1 playbackTime, Nullable`1 skipGaps, Nullable`1 speed, Boolean includeAudio)
   at VideoOS.GatewayService.Controllers.SessionController.Post(String authorization, WebRTCSession value)
2026-03-27 19:24:36.118+09:00 [    33] DEBUG      - VideoOS.WebRTC.SessionHandler.InitiateSession[70]: Initiating session for deviceId: efa10b58-883c-4f2d-8d67-314b88a101e8 
2026-03-27 19:24:36.118+09:00 [    33] ERROR      - VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus[89]: MultiUserEnvironment has not been initialized. 
2026-03-27 19:24:36.118+09:00 [    33] ERROR      - VideoOS.GatewayService.Controllers.SessionController.Post[95]: Failed to handle 'Post' SessionController System.Exception: MultiUserEnvironment not initialized.
   at VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus()
   at VideoOS.WebRTC.SessionHandler.InitiateSession(Guid deviceId, String token, IEnumerable`1 iceCandidateServers, Nullable`1 streamId, Nullable`1 playbackTime, Nullable`1 skipGaps, Nullable`1 speed, Boolean includeAudio)
   at VideoOS.GatewayService.Controllers.SessionController.Post(String authorization, WebRTCSession value)
2026-03-27 19:24:36.118+09:00 [    33] DEBUG      - VideoOS.WebRTC.SessionHandler.InitiateSession[70]: Initiating session for deviceId: 94bcb387-0e58-47bd-a76a-cbfe2e7abc86 
2026-03-27 19:24:36.118+09:00 [    33] ERROR      - VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus[89]: MultiUserEnvironment has not been initialized. 
2026-03-27 19:24:36.129+09:00 [    33] ERROR      - VideoOS.GatewayService.Controllers.SessionController.Post[95]: Failed to handle 'Post' SessionController System.Exception: MultiUserEnvironment not initialized.
   at VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus()
   at VideoOS.WebRTC.SessionHandler.InitiateSession(Guid deviceId, String token, IEnumerable`1 iceCandidateServers, Nullable`1 streamId, Nullable`1 playbackTime, Nullable`1 skipGaps, Nullable`1 speed, Boolean includeAudio)
   at VideoOS.GatewayService.Controllers.SessionController.Post(String authorization, WebRTCSession value)
2026-03-27 19:27:13.693+09:00 [    34] DEBUG      - VideoOS.WebRTC.SessionHandler.InitiateSession[70]: Initiating session for deviceId: 94bcb387-0e58-47bd-a76a-cbfe2e7abc86 
2026-03-27 19:27:13.693+09:00 [    34] ERROR      - VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus[89]: MultiUserEnvironment has not been initialized. 
2026-03-27 19:27:13.693+09:00 [    34] ERROR      - VideoOS.GatewayService.Controllers.SessionController.Post[95]: Failed to handle 'Post' SessionController System.Exception: MultiUserEnvironment not initialized.
   at VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus()
   at VideoOS.WebRTC.SessionHandler.InitiateSession(Guid deviceId, String token, IEnumerable`1 iceCandidateServers, Nullable`1 streamId, Nullable`1 playbackTime, Nullable`1 skipGaps, Nullable`1 speed, Boolean includeAudio)
   at VideoOS.GatewayService.Controllers.SessionController.Post(String authorization, WebRTCSession value)
2026-03-27 19:27:16.969+09:00 [    36] DEBUG      - VideoOS.WebRTC.SessionHandler.InitiateSession[70]: Initiating session for deviceId: efa10b58-883c-4f2d-8d67-314b88a101e8 
2026-03-27 19:27:16.969+09:00 [    36] ERROR      - VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus[89]: MultiUserEnvironment has not been initialized. 
2026-03-27 19:27:16.969+09:00 [    36] ERROR      - VideoOS.GatewayService.Controllers.SessionController.Post[95]: Failed to handle 'Post' SessionController System.Exception: MultiUserEnvironment not initialized.
   at VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus()
   at VideoOS.WebRTC.SessionHandler.InitiateSession(Guid deviceId, String token, IEnumerable`1 iceCandidateServers, Nullable`1 streamId, Nullable`1 playbackTime, Nullable`1 skipGaps, Nullable`1 speed, Boolean includeAudio)
   at VideoOS.GatewayService.Controllers.SessionController.Post(String authorization, WebRTCSession value)
2026-03-27 19:27:16.989+09:00 [    36] DEBUG      - VideoOS.WebRTC.SessionHandler.InitiateSession[70]: Initiating session for deviceId: 144059bb-e458-4c89-bee7-e82b809edc48 
2026-03-27 19:27:16.989+09:00 [    36] ERROR      - VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus[89]: MultiUserEnvironment has not been initialized. 
2026-03-27 19:27:16.989+09:00 [    36] ERROR      - VideoOS.GatewayService.Controllers.SessionController.Post[95]: Failed to handle 'Post' SessionController System.Exception: MultiUserEnvironment not initialized.
   at VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus()
   at VideoOS.WebRTC.SessionHandler.InitiateSession(Guid deviceId, String token, IEnumerable`1 iceCandidateServers, Nullable`1 streamId, Nullable`1 playbackTime, Nullable`1 skipGaps, Nullable`1 speed, Boolean includeAudio)
   at VideoOS.GatewayService.Controllers.SessionController.Post(String authorization, WebRTCSession value)
2026-03-27 19:27:17.007+09:00 [    36] DEBUG      - VideoOS.WebRTC.SessionHandler.InitiateSession[70]: Initiating session for deviceId: cbabf9bd-fbc2-40c4-83ea-339525035756 
2026-03-27 19:27:17.007+09:00 [    36] ERROR      - VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus[89]: MultiUserEnvironment has not been initialized. 
2026-03-27 19:27:17.007+09:00 [    36] ERROR      - VideoOS.GatewayService.Controllers.SessionController.Post[95]: Failed to handle 'Post' SessionController System.Exception: MultiUserEnvironment not initialized.
   at VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus()
   at VideoOS.WebRTC.SessionHandler.InitiateSession(Guid deviceId, String token, IEnumerable`1 iceCandidateServers, Nullable`1 streamId, Nullable`1 playbackTime, Nullable`1 skipGaps, Nullable`1 speed, Boolean includeAudio)
   at VideoOS.GatewayService.Controllers.SessionController.Post(String authorization, WebRTCSession value)
2026-03-27 19:27:17.007+09:00 [    36] DEBUG      - VideoOS.WebRTC.SessionHandler.InitiateSession[70]: Initiating session for deviceId: f131f2e3-fd8d-457a-8d6d-858418301b1d 
2026-03-27 19:27:17.007+09:00 [    36] ERROR      - VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus[89]: MultiUserEnvironment has not been initialized. 
2026-03-27 19:27:17.007+09:00 [    36] ERROR      - VideoOS.GatewayService.Controllers.SessionController.Post[95]: Failed to handle 'Post' SessionController System.Exception: MultiUserEnvironment not initialized.
   at VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus()
   at VideoOS.WebRTC.SessionHandler.InitiateSession(Guid deviceId, String token, IEnumerable`1 iceCandidateServers, Nullable`1 streamId, Nullable`1 playbackTime, Nullable`1 skipGaps, Nullable`1 speed, Boolean includeAudio)
   at VideoOS.GatewayService.Controllers.SessionController.Post(String authorization, WebRTCSession value)
2026-03-27 19:27:17.032+09:00 [    36] DEBUG      - VideoOS.WebRTC.SessionHandler.InitiateSession[70]: Initiating session for deviceId: 94bcb387-0e58-47bd-a76a-cbfe2e7abc86 
2026-03-27 19:27:17.032+09:00 [    36] ERROR      - VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus[89]: MultiUserEnvironment has not been initialized. 
2026-03-27 19:27:17.032+09:00 [    36] ERROR      - VideoOS.GatewayService.Controllers.SessionController.Post[95]: Failed to handle 'Post' SessionController System.Exception: MultiUserEnvironment not initialized.
   at VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus()
   at VideoOS.WebRTC.SessionHandler.InitiateSession(Guid deviceId, String token, IEnumerable`1 iceCandidateServers, Nullable`1 streamId, Nullable`1 playbackTime, Nullable`1 skipGaps, Nullable`1 speed, Boolean includeAudio)
   at VideoOS.GatewayService.Controllers.SessionController.Post(String authorization, WebRTCSession value)
2026-03-27 19:39:00.976+09:00 [    42] DEBUG      - VideoOS.WebRTC.SessionHandler.InitiateSession[70]: Initiating session for deviceId: f131f2e3-fd8d-457a-8d6d-858418301b1d 
2026-03-27 19:39:00.976+09:00 [    42] ERROR      - VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus[89]: MultiUserEnvironment has not been initialized. 
2026-03-27 19:39:00.976+09:00 [    42] ERROR      - VideoOS.GatewayService.Controllers.SessionController.Post[95]: Failed to handle 'Post' SessionController System.Exception: MultiUserEnvironment not initialized.
   at VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus()
   at VideoOS.WebRTC.SessionHandler.InitiateSession(Guid deviceId, String token, IEnumerable`1 iceCandidateServers, Nullable`1 streamId, Nullable`1 playbackTime, Nullable`1 skipGaps, Nullable`1 speed, Boolean includeAudio)
   at VideoOS.GatewayService.Controllers.SessionController.Post(String authorization, WebRTCSession value)
2026-03-27 19:39:01.002+09:00 [    43] DEBUG      - VideoOS.WebRTC.SessionHandler.InitiateSession[70]: Initiating session for deviceId: cbabf9bd-fbc2-40c4-83ea-339525035756 
2026-03-27 19:39:01.002+09:00 [    43] ERROR      - VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus[89]: MultiUserEnvironment has not been initialized. 
2026-03-27 19:39:01.002+09:00 [    43] ERROR      - VideoOS.GatewayService.Controllers.SessionController.Post[95]: Failed to handle 'Post' SessionController System.Exception: MultiUserEnvironment not initialized.
   at VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus()
   at VideoOS.WebRTC.SessionHandler.InitiateSession(Guid deviceId, String token, IEnumerable`1 iceCandidateServers, Nullable`1 streamId, Nullable`1 playbackTime, Nullable`1 skipGaps, Nullable`1 speed, Boolean includeAudio)
   at VideoOS.GatewayService.Controllers.SessionController.Post(String authorization, WebRTCSession value)
2026-03-27 19:39:01.002+09:00 [    43] DEBUG      - VideoOS.WebRTC.SessionHandler.InitiateSession[70]: Initiating session for deviceId: 144059bb-e458-4c89-bee7-e82b809edc48 
2026-03-27 19:39:01.002+09:00 [    43] ERROR      - VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus[89]: MultiUserEnvironment has not been initialized. 
2026-03-27 19:39:01.002+09:00 [    43] ERROR      - VideoOS.GatewayService.Controllers.SessionController.Post[95]: Failed to handle 'Post' SessionController System.Exception: MultiUserEnvironment not initialized.
   at VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus()
   at VideoOS.WebRTC.SessionHandler.InitiateSession(Guid deviceId, String token, IEnumerable`1 iceCandidateServers, Nullable`1 streamId, Nullable`1 playbackTime, Nullable`1 skipGaps, Nullable`1 speed, Boolean includeAudio)
   at VideoOS.GatewayService.Controllers.SessionController.Post(String authorization, WebRTCSession value)
2026-03-27 19:39:01.030+09:00 [    43] DEBUG      - VideoOS.WebRTC.SessionHandler.InitiateSession[70]: Initiating session for deviceId: efa10b58-883c-4f2d-8d67-314b88a101e8 
2026-03-27 19:39:01.030+09:00 [    43] ERROR      - VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus[89]: MultiUserEnvironment has not been initialized. 
2026-03-27 19:39:01.031+09:00 [    43] ERROR      - VideoOS.GatewayService.Controllers.SessionController.Post[95]: Failed to handle 'Post' SessionController System.Exception: MultiUserEnvironment not initialized.
   at VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus()
   at VideoOS.WebRTC.SessionHandler.InitiateSession(Guid deviceId, String token, IEnumerable`1 iceCandidateServers, Nullable`1 streamId, Nullable`1 playbackTime, Nullable`1 skipGaps, Nullable`1 speed, Boolean includeAudio)
   at VideoOS.GatewayService.Controllers.SessionController.Post(String authorization, WebRTCSession value)
2026-03-27 19:39:01.031+09:00 [    43] DEBUG      - VideoOS.WebRTC.SessionHandler.InitiateSession[70]: Initiating session for deviceId: 94bcb387-0e58-47bd-a76a-cbfe2e7abc86 
2026-03-27 19:39:01.047+09:00 [    43] ERROR      - VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus[89]: MultiUserEnvironment has not been initialized. 
2026-03-27 19:39:01.047+09:00 [    43] ERROR      - VideoOS.GatewayService.Controllers.SessionController.Post[95]: Failed to handle 'Post' SessionController System.Exception: MultiUserEnvironment not initialized.
   at VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus()
   at VideoOS.WebRTC.SessionHandler.InitiateSession(Guid deviceId, String token, IEnumerable`1 iceCandidateServers, Nullable`1 streamId, Nullable`1 playbackTime, Nullable`1 skipGaps, Nullable`1 speed, Boolean includeAudio)
   at VideoOS.GatewayService.Controllers.SessionController.Post(String authorization, WebRTCSession value)
2026-03-27 19:39:12.781+09:00 [    20] DEBUG      - VideoOS.WebRTC.SessionHandler.InitiateSession[70]: Initiating session for deviceId: f131f2e3-fd8d-457a-8d6d-858418301b1d 
2026-03-27 19:39:12.781+09:00 [    20] ERROR      - VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus[89]: MultiUserEnvironment has not been initialized. 
2026-03-27 19:39:12.781+09:00 [    20] ERROR      - VideoOS.GatewayService.Controllers.SessionController.Post[95]: Failed to handle 'Post' SessionController System.Exception: MultiUserEnvironment not initialized.
   at VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus()
   at VideoOS.WebRTC.SessionHandler.InitiateSession(Guid deviceId, String token, IEnumerable`1 iceCandidateServers, Nullable`1 streamId, Nullable`1 playbackTime, Nullable`1 skipGaps, Nullable`1 speed, Boolean includeAudio)
   at VideoOS.GatewayService.Controllers.SessionController.Post(String authorization, WebRTCSession value)
2026-03-27 19:39:12.797+09:00 [    20] DEBUG      - VideoOS.WebRTC.SessionHandler.InitiateSession[70]: Initiating session for deviceId: efa10b58-883c-4f2d-8d67-314b88a101e8 
2026-03-27 19:39:12.797+09:00 [    20] ERROR      - VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus[89]: MultiUserEnvironment has not been initialized. 
2026-03-27 19:39:12.797+09:00 [    20] ERROR      - VideoOS.GatewayService.Controllers.SessionController.Post[95]: Failed to handle 'Post' SessionController System.Exception: MultiUserEnvironment not initialized.
   at VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus()
   at VideoOS.WebRTC.SessionHandler.InitiateSession(Guid deviceId, String token, IEnumerable`1 iceCandidateServers, Nullable`1 streamId, Nullable`1 playbackTime, Nullable`1 skipGaps, Nullable`1 speed, Boolean includeAudio)
   at VideoOS.GatewayService.Controllers.SessionController.Post(String authorization, WebRTCSession value)
2026-03-27 19:39:12.797+09:00 [    20] DEBUG      - VideoOS.WebRTC.SessionHandler.InitiateSession[70]: Initiating session for deviceId: 144059bb-e458-4c89-bee7-e82b809edc48 
2026-03-27 19:39:12.797+09:00 [    20] ERROR      - VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus[89]: MultiUserEnvironment has not been initialized. 
2026-03-27 19:39:12.797+09:00 [    20] ERROR      - VideoOS.GatewayService.Controllers.SessionController.Post[95]: Failed to handle 'Post' SessionController System.Exception: MultiUserEnvironment not initialized.
   at VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus()
   at VideoOS.WebRTC.SessionHandler.InitiateSession(Guid deviceId, String token, IEnumerable`1 iceCandidateServers, Nullable`1 streamId, Nullable`1 playbackTime, Nullable`1 skipGaps, Nullable`1 speed, Boolean includeAudio)
   at VideoOS.GatewayService.Controllers.SessionController.Post(String authorization, WebRTCSession value)
2026-03-27 19:39:12.820+09:00 [    20] DEBUG      - VideoOS.WebRTC.SessionHandler.InitiateSession[70]: Initiating session for deviceId: cbabf9bd-fbc2-40c4-83ea-339525035756 
2026-03-27 19:39:12.820+09:00 [    20] ERROR      - VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus[89]: MultiUserEnvironment has not been initialized. 
2026-03-27 19:39:12.820+09:00 [    20] ERROR      - VideoOS.GatewayService.Controllers.SessionController.Post[95]: Failed to handle 'Post' SessionController System.Exception: MultiUserEnvironment not initialized.
   at VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus()
   at VideoOS.WebRTC.SessionHandler.InitiateSession(Guid deviceId, String token, IEnumerable`1 iceCandidateServers, Nullable`1 streamId, Nullable`1 playbackTime, Nullable`1 skipGaps, Nullable`1 speed, Boolean includeAudio)
   at VideoOS.GatewayService.Controllers.SessionController.Post(String authorization, WebRTCSession value)
2026-03-27 19:39:12.831+09:00 [    20] DEBUG      - VideoOS.WebRTC.SessionHandler.InitiateSession[70]: Initiating session for deviceId: 94bcb387-0e58-47bd-a76a-cbfe2e7abc86 
2026-03-27 19:39:12.831+09:00 [    20] ERROR      - VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus[89]: MultiUserEnvironment has not been initialized. 
2026-03-27 19:39:12.831+09:00 [    20] ERROR      - VideoOS.GatewayService.Controllers.SessionController.Post[95]: Failed to handle 'Post' SessionController System.Exception: MultiUserEnvironment not initialized.
   at VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus()
   at VideoOS.WebRTC.SessionHandler.InitiateSession(Guid deviceId, String token, IEnumerable`1 iceCandidateServers, Nullable`1 streamId, Nullable`1 playbackTime, Nullable`1 skipGaps, Nullable`1 speed, Boolean includeAudio)
   at VideoOS.GatewayService.Controllers.SessionController.Post(String authorization, WebRTCSession value)
2026-03-27 19:39:15.181+09:00 [    43] DEBUG      - VideoOS.WebRTC.SessionHandler.InitiateSession[70]: Initiating session for deviceId: f131f2e3-fd8d-457a-8d6d-858418301b1d 
2026-03-27 19:39:15.181+09:00 [    43] ERROR      - VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus[89]: MultiUserEnvironment has not been initialized. 
2026-03-27 19:39:15.181+09:00 [    43] ERROR      - VideoOS.GatewayService.Controllers.SessionController.Post[95]: Failed to handle 'Post' SessionController System.Exception: MultiUserEnvironment not initialized.
   at VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus()
   at VideoOS.WebRTC.SessionHandler.InitiateSession(Guid deviceId, String token, IEnumerable`1 iceCandidateServers, Nullable`1 streamId, Nullable`1 playbackTime, Nullable`1 skipGaps, Nullable`1 speed, Boolean includeAudio)
   at VideoOS.GatewayService.Controllers.SessionController.Post(String authorization, WebRTCSession value)
2026-03-27 19:39:15.192+09:00 [    43] DEBUG      - VideoOS.WebRTC.SessionHandler.InitiateSession[70]: Initiating session for deviceId: cbabf9bd-fbc2-40c4-83ea-339525035756 
2026-03-27 19:39:15.192+09:00 [    43] ERROR      - VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus[89]: MultiUserEnvironment has not been initialized. 
2026-03-27 19:39:15.192+09:00 [    43] ERROR      - VideoOS.GatewayService.Controllers.SessionController.Post[95]: Failed to handle 'Post' SessionController System.Exception: MultiUserEnvironment not initialized.
   at VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus()
   at VideoOS.WebRTC.SessionHandler.InitiateSession(Guid deviceId, String token, IEnumerable`1 iceCandidateServers, Nullable`1 streamId, Nullable`1 playbackTime, Nullable`1 skipGaps, Nullable`1 speed, Boolean includeAudio)
   at VideoOS.GatewayService.Controllers.SessionController.Post(String authorization, WebRTCSession value)
2026-03-27 19:39:15.203+09:00 [    43] DEBUG      - VideoOS.WebRTC.SessionHandler.InitiateSession[70]: Initiating session for deviceId: 94bcb387-0e58-47bd-a76a-cbfe2e7abc86 
2026-03-27 19:39:15.203+09:00 [    43] ERROR      - VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus[89]: MultiUserEnvironment has not been initialized. 
2026-03-27 19:39:15.203+09:00 [    43] ERROR      - VideoOS.GatewayService.Controllers.SessionController.Post[95]: Failed to handle 'Post' SessionController System.Exception: MultiUserEnvironment not initialized.
   at VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus()
   at VideoOS.WebRTC.SessionHandler.InitiateSession(Guid deviceId, String token, IEnumerable`1 iceCandidateServers, Nullable`1 streamId, Nullable`1 playbackTime, Nullable`1 skipGaps, Nullable`1 speed, Boolean includeAudio)
   at VideoOS.GatewayService.Controllers.SessionController.Post(String authorization, WebRTCSession value)
2026-03-27 19:39:15.203+09:00 [    43] DEBUG      - VideoOS.WebRTC.SessionHandler.InitiateSession[70]: Initiating session for deviceId: 144059bb-e458-4c89-bee7-e82b809edc48 
2026-03-27 19:39:15.203+09:00 [    43] ERROR      - VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus[89]: MultiUserEnvironment has not been initialized. 
2026-03-27 19:39:15.203+09:00 [    43] ERROR      - VideoOS.GatewayService.Controllers.SessionController.Post[95]: Failed to handle 'Post' SessionController System.Exception: MultiUserEnvironment not initialized.
   at VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus()
   at VideoOS.WebRTC.SessionHandler.InitiateSession(Guid deviceId, String token, IEnumerable`1 iceCandidateServers, Nullable`1 streamId, Nullable`1 playbackTime, Nullable`1 skipGaps, Nullable`1 speed, Boolean includeAudio)
   at VideoOS.GatewayService.Controllers.SessionController.Post(String authorization, WebRTCSession value)
2026-03-27 19:39:15.230+09:00 [    43] DEBUG      - VideoOS.WebRTC.SessionHandler.InitiateSession[70]: Initiating session for deviceId: efa10b58-883c-4f2d-8d67-314b88a101e8 
2026-03-27 19:39:15.230+09:00 [    43] ERROR      - VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus[89]: MultiUserEnvironment has not been initialized. 
2026-03-27 19:39:15.230+09:00 [    43] ERROR      - VideoOS.GatewayService.Controllers.SessionController.Post[95]: Failed to handle 'Post' SessionController System.Exception: MultiUserEnvironment not initialized.
   at VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus()
   at VideoOS.WebRTC.SessionHandler.InitiateSession(Guid deviceId, String token, IEnumerable`1 iceCandidateServers, Nullable`1 streamId, Nullable`1 playbackTime, Nullable`1 skipGaps, Nullable`1 speed, Boolean includeAudio)
   at VideoOS.GatewayService.Controllers.SessionController.Post(String authorization, WebRTCSession value)
2026-03-27 19:39:17.541+09:00 [    43] DEBUG      - VideoOS.WebRTC.SessionHandler.InitiateSession[70]: Initiating session for deviceId: efa10b58-883c-4f2d-8d67-314b88a101e8 
2026-03-27 19:39:17.541+09:00 [    43] ERROR      - VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus[89]: MultiUserEnvironment has not been initialized. 
2026-03-27 19:39:17.541+09:00 [    43] ERROR      - VideoOS.GatewayService.Controllers.SessionController.Post[95]: Failed to handle 'Post' SessionController System.Exception: MultiUserEnvironment not initialized.
   at VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus()
   at VideoOS.WebRTC.SessionHandler.InitiateSession(Guid deviceId, String token, IEnumerable`1 iceCandidateServers, Nullable`1 streamId, Nullable`1 playbackTime, Nullable`1 skipGaps, Nullable`1 speed, Boolean includeAudio)
   at VideoOS.GatewayService.Controllers.SessionController.Post(String authorization, WebRTCSession value)
2026-03-27 19:39:17.552+09:00 [    20] DEBUG      - VideoOS.WebRTC.SessionHandler.InitiateSession[70]: Initiating session for deviceId: 144059bb-e458-4c89-bee7-e82b809edc48 
2026-03-27 19:39:17.552+09:00 [    20] ERROR      - VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus[89]: MultiUserEnvironment has not been initialized. 
2026-03-27 19:39:17.552+09:00 [    20] ERROR      - VideoOS.GatewayService.Controllers.SessionController.Post[95]: Failed to handle 'Post' SessionController System.Exception: MultiUserEnvironment not initialized.
   at VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus()
   at VideoOS.WebRTC.SessionHandler.InitiateSession(Guid deviceId, String token, IEnumerable`1 iceCandidateServers, Nullable`1 streamId, Nullable`1 playbackTime, Nullable`1 skipGaps, Nullable`1 speed, Boolean includeAudio)
   at VideoOS.GatewayService.Controllers.SessionController.Post(String authorization, WebRTCSession value)
2026-03-27 19:39:17.562+09:00 [    20] DEBUG      - VideoOS.WebRTC.SessionHandler.InitiateSession[70]: Initiating session for deviceId: 94bcb387-0e58-47bd-a76a-cbfe2e7abc86 
2026-03-27 19:39:17.562+09:00 [    20] ERROR      - VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus[89]: MultiUserEnvironment has not been initialized. 
2026-03-27 19:39:17.562+09:00 [    20] ERROR      - VideoOS.GatewayService.Controllers.SessionController.Post[95]: Failed to handle 'Post' SessionController System.Exception: MultiUserEnvironment not initialized.
   at VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus()
   at VideoOS.WebRTC.SessionHandler.InitiateSession(Guid deviceId, String token, IEnumerable`1 iceCandidateServers, Nullable`1 streamId, Nullable`1 playbackTime, Nullable`1 skipGaps, Nullable`1 speed, Boolean includeAudio)
   at VideoOS.GatewayService.Controllers.SessionController.Post(String authorization, WebRTCSession value)
2026-03-27 19:39:17.562+09:00 [    20] DEBUG      - VideoOS.WebRTC.SessionHandler.InitiateSession[70]: Initiating session for deviceId: cbabf9bd-fbc2-40c4-83ea-339525035756 
2026-03-27 19:39:17.562+09:00 [    20] ERROR      - VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus[89]: MultiUserEnvironment has not been initialized. 
2026-03-27 19:39:17.562+09:00 [    20] ERROR      - VideoOS.GatewayService.Controllers.SessionController.Post[95]: Failed to handle 'Post' SessionController System.Exception: MultiUserEnvironment not initialized.
   at VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus()
   at VideoOS.WebRTC.SessionHandler.InitiateSession(Guid deviceId, String token, IEnumerable`1 iceCandidateServers, Nullable`1 streamId, Nullable`1 playbackTime, Nullable`1 skipGaps, Nullable`1 speed, Boolean includeAudio)
   at VideoOS.GatewayService.Controllers.SessionController.Post(String authorization, WebRTCSession value)
2026-03-27 19:39:17.589+09:00 [    20] DEBUG      - VideoOS.WebRTC.SessionHandler.InitiateSession[70]: Initiating session for deviceId: f131f2e3-fd8d-457a-8d6d-858418301b1d 
2026-03-27 19:39:17.589+09:00 [    20] ERROR      - VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus[89]: MultiUserEnvironment has not been initialized. 
2026-03-27 19:39:17.589+09:00 [    20] ERROR      - VideoOS.GatewayService.Controllers.SessionController.Post[95]: Failed to handle 'Post' SessionController System.Exception: MultiUserEnvironment not initialized.
   at VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus()
   at VideoOS.WebRTC.SessionHandler.InitiateSession(Guid deviceId, String token, IEnumerable`1 iceCandidateServers, Nullable`1 streamId, Nullable`1 playbackTime, Nullable`1 skipGaps, Nullable`1 speed, Boolean includeAudio)
   at VideoOS.GatewayService.Controllers.SessionController.Post(String authorization, WebRTCSession value)
2026-03-27 19:39:19.993+09:00 [    20] DEBUG      - VideoOS.WebRTC.SessionHandler.InitiateSession[70]: Initiating session for deviceId: 144059bb-e458-4c89-bee7-e82b809edc48 
2026-03-27 19:39:19.993+09:00 [    20] ERROR      - VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus[89]: MultiUserEnvironment has not been initialized. 
2026-03-27 19:39:19.993+09:00 [    20] ERROR      - VideoOS.GatewayService.Controllers.SessionController.Post[95]: Failed to handle 'Post' SessionController System.Exception: MultiUserEnvironment not initialized.
   at VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus()
   at VideoOS.WebRTC.SessionHandler.InitiateSession(Guid deviceId, String token, IEnumerable`1 iceCandidateServers, Nullable`1 streamId, Nullable`1 playbackTime, Nullable`1 skipGaps, Nullable`1 speed, Boolean includeAudio)
   at VideoOS.GatewayService.Controllers.SessionController.Post(String authorization, WebRTCSession value)
2026-03-27 19:39:20.010+09:00 [    20] DEBUG      - VideoOS.WebRTC.SessionHandler.InitiateSession[70]: Initiating session for deviceId: f131f2e3-fd8d-457a-8d6d-858418301b1d 
2026-03-27 19:39:20.010+09:00 [    20] ERROR      - VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus[89]: MultiUserEnvironment has not been initialized. 
2026-03-27 19:39:20.010+09:00 [    20] ERROR      - VideoOS.GatewayService.Controllers.SessionController.Post[95]: Failed to handle 'Post' SessionController System.Exception: MultiUserEnvironment not initialized.
   at VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus()
   at VideoOS.WebRTC.SessionHandler.InitiateSession(Guid deviceId, String token, IEnumerable`1 iceCandidateServers, Nullable`1 streamId, Nullable`1 playbackTime, Nullable`1 skipGaps, Nullable`1 speed, Boolean includeAudio)
   at VideoOS.GatewayService.Controllers.SessionController.Post(String authorization, WebRTCSession value)
2026-03-27 19:39:20.022+09:00 [    20] DEBUG      - VideoOS.WebRTC.SessionHandler.InitiateSession[70]: Initiating session for deviceId: cbabf9bd-fbc2-40c4-83ea-339525035756 
2026-03-27 19:39:20.022+09:00 [    20] ERROR      - VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus[89]: MultiUserEnvironment has not been initialized. 
2026-03-27 19:39:20.022+09:00 [    20] ERROR      - VideoOS.GatewayService.Controllers.SessionController.Post[95]: Failed to handle 'Post' SessionController System.Exception: MultiUserEnvironment not initialized.
   at VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus()
   at VideoOS.WebRTC.SessionHandler.InitiateSession(Guid deviceId, String token, IEnumerable`1 iceCandidateServers, Nullable`1 streamId, Nullable`1 playbackTime, Nullable`1 skipGaps, Nullable`1 speed, Boolean includeAudio)
   at VideoOS.GatewayService.Controllers.SessionController.Post(String authorization, WebRTCSession value)
2026-03-27 19:39:20.034+09:00 [    20] DEBUG      - VideoOS.WebRTC.SessionHandler.InitiateSession[70]: Initiating session for deviceId: 94bcb387-0e58-47bd-a76a-cbfe2e7abc86 
2026-03-27 19:39:20.034+09:00 [    20] ERROR      - VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus[89]: MultiUserEnvironment has not been initialized. 
2026-03-27 19:39:20.034+09:00 [    20] ERROR      - VideoOS.GatewayService.Controllers.SessionController.Post[95]: Failed to handle 'Post' SessionController System.Exception: MultiUserEnvironment not initialized.
   at VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus()
   at VideoOS.WebRTC.SessionHandler.InitiateSession(Guid deviceId, String token, IEnumerable`1 iceCandidateServers, Nullable`1 streamId, Nullable`1 playbackTime, Nullable`1 skipGaps, Nullable`1 speed, Boolean includeAudio)
   at VideoOS.GatewayService.Controllers.SessionController.Post(String authorization, WebRTCSession value)
2026-03-27 19:39:20.034+09:00 [    20] DEBUG      - VideoOS.WebRTC.SessionHandler.InitiateSession[70]: Initiating session for deviceId: efa10b58-883c-4f2d-8d67-314b88a101e8 
2026-03-27 19:39:20.034+09:00 [    20] ERROR      - VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus[89]: MultiUserEnvironment has not been initialized. 
2026-03-27 19:39:20.034+09:00 [    20] ERROR      - VideoOS.GatewayService.Controllers.SessionController.Post[95]: Failed to handle 'Post' SessionController System.Exception: MultiUserEnvironment not initialized.
   at VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus()
   at VideoOS.WebRTC.SessionHandler.InitiateSession(Guid deviceId, String token, IEnumerable`1 iceCandidateServers, Nullable`1 streamId, Nullable`1 playbackTime, Nullable`1 skipGaps, Nullable`1 speed, Boolean includeAudio)
   at VideoOS.GatewayService.Controllers.SessionController.Post(String authorization, WebRTCSession value)
2026-03-27 19:39:25.692+09:00 [    41] DEBUG      - VideoOS.WebRTC.SessionHandler.InitiateSession[70]: Initiating session for deviceId: 94bcb387-0e58-47bd-a76a-cbfe2e7abc86 
2026-03-27 19:39:25.692+09:00 [    41] ERROR      - VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus[89]: MultiUserEnvironment has not been initialized. 
2026-03-27 19:39:25.692+09:00 [    41] ERROR      - VideoOS.GatewayService.Controllers.SessionController.Post[95]: Failed to handle 'Post' SessionController System.Exception: MultiUserEnvironment not initialized.
   at VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus()
   at VideoOS.WebRTC.SessionHandler.InitiateSession(Guid deviceId, String token, IEnumerable`1 iceCandidateServers, Nullable`1 streamId, Nullable`1 playbackTime, Nullable`1 skipGaps, Nullable`1 speed, Boolean includeAudio)
   at VideoOS.GatewayService.Controllers.SessionController.Post(String authorization, WebRTCSession value)
2026-03-27 19:39:29.694+09:00 [    20] DEBUG      - VideoOS.WebRTC.SessionHandler.InitiateSession[70]: Initiating session for deviceId: 94bcb387-0e58-47bd-a76a-cbfe2e7abc86 
2026-03-27 19:39:29.694+09:00 [    20] ERROR      - VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus[89]: MultiUserEnvironment has not been initialized. 
2026-03-27 19:39:29.694+09:00 [    20] ERROR      - VideoOS.GatewayService.Controllers.SessionController.Post[95]: Failed to handle 'Post' SessionController System.Exception: MultiUserEnvironment not initialized.
   at VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus()
   at VideoOS.WebRTC.SessionHandler.InitiateSession(Guid deviceId, String token, IEnumerable`1 iceCandidateServers, Nullable`1 streamId, Nullable`1 playbackTime, Nullable`1 skipGaps, Nullable`1 speed, Boolean includeAudio)
   at VideoOS.GatewayService.Controllers.SessionController.Post(String authorization, WebRTCSession value)
2026-03-27 19:39:29.704+09:00 [    20] DEBUG      - VideoOS.WebRTC.SessionHandler.InitiateSession[70]: Initiating session for deviceId: f131f2e3-fd8d-457a-8d6d-858418301b1d 
2026-03-27 19:39:29.704+09:00 [    20] ERROR      - VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus[89]: MultiUserEnvironment has not been initialized. 
2026-03-27 19:39:29.704+09:00 [    20] ERROR      - VideoOS.GatewayService.Controllers.SessionController.Post[95]: Failed to handle 'Post' SessionController System.Exception: MultiUserEnvironment not initialized.
   at VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus()
   at VideoOS.WebRTC.SessionHandler.InitiateSession(Guid deviceId, String token, IEnumerable`1 iceCandidateServers, Nullable`1 streamId, Nullable`1 playbackTime, Nullable`1 skipGaps, Nullable`1 speed, Boolean includeAudio)
   at VideoOS.GatewayService.Controllers.SessionController.Post(String authorization, WebRTCSession value)
2026-03-27 19:39:29.704+09:00 [    20] DEBUG      - VideoOS.WebRTC.SessionHandler.InitiateSession[70]: Initiating session for deviceId: efa10b58-883c-4f2d-8d67-314b88a101e8 
2026-03-27 19:39:29.704+09:00 [    20] ERROR      - VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus[89]: MultiUserEnvironment has not been initialized. 
2026-03-27 19:39:29.704+09:00 [    20] ERROR      - VideoOS.GatewayService.Controllers.SessionController.Post[95]: Failed to handle 'Post' SessionController System.Exception: MultiUserEnvironment not initialized.
   at VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus()
   at VideoOS.WebRTC.SessionHandler.InitiateSession(Guid deviceId, String token, IEnumerable`1 iceCandidateServers, Nullable`1 streamId, Nullable`1 playbackTime, Nullable`1 skipGaps, Nullable`1 speed, Boolean includeAudio)
   at VideoOS.GatewayService.Controllers.SessionController.Post(String authorization, WebRTCSession value)
2026-03-27 19:39:29.726+09:00 [    20] DEBUG      - VideoOS.WebRTC.SessionHandler.InitiateSession[70]: Initiating session for deviceId: 144059bb-e458-4c89-bee7-e82b809edc48 
2026-03-27 19:39:29.726+09:00 [    20] ERROR      - VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus[89]: MultiUserEnvironment has not been initialized. 
2026-03-27 19:39:29.726+09:00 [    20] ERROR      - VideoOS.GatewayService.Controllers.SessionController.Post[95]: Failed to handle 'Post' SessionController System.Exception: MultiUserEnvironment not initialized.
   at VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus()
   at VideoOS.WebRTC.SessionHandler.InitiateSession(Guid deviceId, String token, IEnumerable`1 iceCandidateServers, Nullable`1 streamId, Nullable`1 playbackTime, Nullable`1 skipGaps, Nullable`1 speed, Boolean includeAudio)
   at VideoOS.GatewayService.Controllers.SessionController.Post(String authorization, WebRTCSession value)
2026-03-27 19:39:29.741+09:00 [    20] DEBUG      - VideoOS.WebRTC.SessionHandler.InitiateSession[70]: Initiating session for deviceId: cbabf9bd-fbc2-40c4-83ea-339525035756 
2026-03-27 19:39:29.741+09:00 [    20] ERROR      - VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus[89]: MultiUserEnvironment has not been initialized. 
2026-03-27 19:39:29.741+09:00 [    20] ERROR      - VideoOS.GatewayService.Controllers.SessionController.Post[95]: Failed to handle 'Post' SessionController System.Exception: MultiUserEnvironment not initialized.
   at VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus()
   at VideoOS.WebRTC.SessionHandler.InitiateSession(Guid deviceId, String token, IEnumerable`1 iceCandidateServers, Nullable`1 streamId, Nullable`1 playbackTime, Nullable`1 skipGaps, Nullable`1 speed, Boolean includeAudio)
   at VideoOS.GatewayService.Controllers.SessionController.Post(String authorization, WebRTCSession value)
2026-03-27 19:39:37.812+09:00 [    20] DEBUG      - VideoOS.WebRTC.SessionHandler.InitiateSession[70]: Initiating session for deviceId: efa10b58-883c-4f2d-8d67-314b88a101e8 
2026-03-27 19:39:37.813+09:00 [    20] ERROR      - VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus[89]: MultiUserEnvironment has not been initialized. 
2026-03-27 19:39:37.813+09:00 [    20] ERROR      - VideoOS.GatewayService.Controllers.SessionController.Post[95]: Failed to handle 'Post' SessionController System.Exception: MultiUserEnvironment not initialized.
   at VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus()
   at VideoOS.WebRTC.SessionHandler.InitiateSession(Guid deviceId, String token, IEnumerable`1 iceCandidateServers, Nullable`1 streamId, Nullable`1 playbackTime, Nullable`1 skipGaps, Nullable`1 speed, Boolean includeAudio)
   at VideoOS.GatewayService.Controllers.SessionController.Post(String authorization, WebRTCSession value)
2026-03-27 19:39:37.813+09:00 [    20] DEBUG      - VideoOS.WebRTC.SessionHandler.InitiateSession[70]: Initiating session for deviceId: 144059bb-e458-4c89-bee7-e82b809edc48 
2026-03-27 19:39:37.813+09:00 [    20] ERROR      - VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus[89]: MultiUserEnvironment has not been initialized. 
2026-03-27 19:39:37.813+09:00 [    20] ERROR      - VideoOS.GatewayService.Controllers.SessionController.Post[95]: Failed to handle 'Post' SessionController System.Exception: MultiUserEnvironment not initialized.
   at VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus()
   at VideoOS.WebRTC.SessionHandler.InitiateSession(Guid deviceId, String token, IEnumerable`1 iceCandidateServers, Nullable`1 streamId, Nullable`1 playbackTime, Nullable`1 skipGaps, Nullable`1 speed, Boolean includeAudio)
   at VideoOS.GatewayService.Controllers.SessionController.Post(String authorization, WebRTCSession value)
2026-03-27 19:39:37.835+09:00 [    20] DEBUG      - VideoOS.WebRTC.SessionHandler.InitiateSession[70]: Initiating session for deviceId: cbabf9bd-fbc2-40c4-83ea-339525035756 
2026-03-27 19:39:37.835+09:00 [    20] ERROR      - VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus[89]: MultiUserEnvironment has not been initialized. 
2026-03-27 19:39:37.835+09:00 [    20] ERROR      - VideoOS.GatewayService.Controllers.SessionController.Post[95]: Failed to handle 'Post' SessionController System.Exception: MultiUserEnvironment not initialized.
   at VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus()
   at VideoOS.WebRTC.SessionHandler.InitiateSession(Guid deviceId, String token, IEnumerable`1 iceCandidateServers, Nullable`1 streamId, Nullable`1 playbackTime, Nullable`1 skipGaps, Nullable`1 speed, Boolean includeAudio)
   at VideoOS.GatewayService.Controllers.SessionController.Post(String authorization, WebRTCSession value)
2026-03-27 19:39:37.845+09:00 [    20] DEBUG      - VideoOS.WebRTC.SessionHandler.InitiateSession[70]: Initiating session for deviceId: f131f2e3-fd8d-457a-8d6d-858418301b1d 
2026-03-27 19:39:37.845+09:00 [    20] ERROR      - VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus[89]: MultiUserEnvironment has not been initialized. 
2026-03-27 19:39:37.845+09:00 [    20] ERROR      - VideoOS.GatewayService.Controllers.SessionController.Post[95]: Failed to handle 'Post' SessionController System.Exception: MultiUserEnvironment not initialized.
   at VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus()
   at VideoOS.WebRTC.SessionHandler.InitiateSession(Guid deviceId, String token, IEnumerable`1 iceCandidateServers, Nullable`1 streamId, Nullable`1 playbackTime, Nullable`1 skipGaps, Nullable`1 speed, Boolean includeAudio)
   at VideoOS.GatewayService.Controllers.SessionController.Post(String authorization, WebRTCSession value)
2026-03-27 19:39:37.845+09:00 [    20] DEBUG      - VideoOS.WebRTC.SessionHandler.InitiateSession[70]: Initiating session for deviceId: 94bcb387-0e58-47bd-a76a-cbfe2e7abc86 
2026-03-27 19:39:37.845+09:00 [    20] ERROR      - VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus[89]: MultiUserEnvironment has not been initialized. 
2026-03-27 19:39:37.845+09:00 [    20] ERROR      - VideoOS.GatewayService.Controllers.SessionController.Post[95]: Failed to handle 'Post' SessionController System.Exception: MultiUserEnvironment not initialized.
   at VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus()
   at VideoOS.WebRTC.SessionHandler.InitiateSession(Guid deviceId, String token, IEnumerable`1 iceCandidateServers, Nullable`1 streamId, Nullable`1 playbackTime, Nullable`1 skipGaps, Nullable`1 speed, Boolean includeAudio)
   at VideoOS.GatewayService.Controllers.SessionController.Post(String authorization, WebRTCSession value)
2026-03-27 19:39:40.502+09:00 [    42] DEBUG      - VideoOS.WebRTC.SessionHandler.InitiateSession[70]: Initiating session for deviceId: 144059bb-e458-4c89-bee7-e82b809edc48 
2026-03-27 19:39:40.502+09:00 [    42] ERROR      - VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus[89]: MultiUserEnvironment has not been initialized. 
2026-03-27 19:39:40.502+09:00 [    42] ERROR      - VideoOS.GatewayService.Controllers.SessionController.Post[95]: Failed to handle 'Post' SessionController System.Exception: MultiUserEnvironment not initialized.
   at VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus()
   at VideoOS.WebRTC.SessionHandler.InitiateSession(Guid deviceId, String token, IEnumerable`1 iceCandidateServers, Nullable`1 streamId, Nullable`1 playbackTime, Nullable`1 skipGaps, Nullable`1 speed, Boolean includeAudio)
   at VideoOS.GatewayService.Controllers.SessionController.Post(String authorization, WebRTCSession value)
2026-03-27 19:39:40.502+09:00 [    42] DEBUG      - VideoOS.WebRTC.SessionHandler.InitiateSession[70]: Initiating session for deviceId: 94bcb387-0e58-47bd-a76a-cbfe2e7abc86 
2026-03-27 19:39:40.502+09:00 [    42] ERROR      - VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus[89]: MultiUserEnvironment has not been initialized. 
2026-03-27 19:39:40.502+09:00 [    42] ERROR      - VideoOS.GatewayService.Controllers.SessionController.Post[95]: Failed to handle 'Post' SessionController System.Exception: MultiUserEnvironment not initialized.
   at VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus()
   at VideoOS.WebRTC.SessionHandler.InitiateSession(Guid deviceId, String token, IEnumerable`1 iceCandidateServers, Nullable`1 streamId, Nullable`1 playbackTime, Nullable`1 skipGaps, Nullable`1 speed, Boolean includeAudio)
   at VideoOS.GatewayService.Controllers.SessionController.Post(String authorization, WebRTCSession value)
2026-03-27 19:39:40.525+09:00 [    42] DEBUG      - VideoOS.WebRTC.SessionHandler.InitiateSession[70]: Initiating session for deviceId: cbabf9bd-fbc2-40c4-83ea-339525035756 
2026-03-27 19:39:40.525+09:00 [    42] ERROR      - VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus[89]: MultiUserEnvironment has not been initialized. 
2026-03-27 19:39:40.525+09:00 [    42] ERROR      - VideoOS.GatewayService.Controllers.SessionController.Post[95]: Failed to handle 'Post' SessionController System.Exception: MultiUserEnvironment not initialized.
   at VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus()
   at VideoOS.WebRTC.SessionHandler.InitiateSession(Guid deviceId, String token, IEnumerable`1 iceCandidateServers, Nullable`1 streamId, Nullable`1 playbackTime, Nullable`1 skipGaps, Nullable`1 speed, Boolean includeAudio)
   at VideoOS.GatewayService.Controllers.SessionController.Post(String authorization, WebRTCSession value)
2026-03-27 19:39:40.535+09:00 [    42] DEBUG      - VideoOS.WebRTC.SessionHandler.InitiateSession[70]: Initiating session for deviceId: efa10b58-883c-4f2d-8d67-314b88a101e8 
2026-03-27 19:39:40.535+09:00 [    42] ERROR      - VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus[89]: MultiUserEnvironment has not been initialized. 
2026-03-27 19:39:40.535+09:00 [    42] ERROR      - VideoOS.GatewayService.Controllers.SessionController.Post[95]: Failed to handle 'Post' SessionController System.Exception: MultiUserEnvironment not initialized.
   at VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus()
   at VideoOS.WebRTC.SessionHandler.InitiateSession(Guid deviceId, String token, IEnumerable`1 iceCandidateServers, Nullable`1 streamId, Nullable`1 playbackTime, Nullable`1 skipGaps, Nullable`1 speed, Boolean includeAudio)
   at VideoOS.GatewayService.Controllers.SessionController.Post(String authorization, WebRTCSession value)
2026-03-27 19:39:40.535+09:00 [    42] DEBUG      - VideoOS.WebRTC.SessionHandler.InitiateSession[70]: Initiating session for deviceId: f131f2e3-fd8d-457a-8d6d-858418301b1d 
2026-03-27 19:39:40.535+09:00 [    42] ERROR      - VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus[89]: MultiUserEnvironment has not been initialized. 
2026-03-27 19:39:40.535+09:00 [    42] ERROR      - VideoOS.GatewayService.Controllers.SessionController.Post[95]: Failed to handle 'Post' SessionController System.Exception: MultiUserEnvironment not initialized.
   at VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus()
   at VideoOS.WebRTC.SessionHandler.InitiateSession(Guid deviceId, String token, IEnumerable`1 iceCandidateServers, Nullable`1 streamId, Nullable`1 playbackTime, Nullable`1 skipGaps, Nullable`1 speed, Boolean includeAudio)
   at VideoOS.GatewayService.Controllers.SessionController.Post(String authorization, WebRTCSession value)
2026-03-27 19:39:44.549+09:00 [    43] DEBUG      - VideoOS.WebRTC.SessionHandler.InitiateSession[70]: Initiating session for deviceId: efa10b58-883c-4f2d-8d67-314b88a101e8 
2026-03-27 19:39:44.549+09:00 [    43] ERROR      - VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus[89]: MultiUserEnvironment has not been initialized. 
2026-03-27 19:39:44.549+09:00 [    43] ERROR      - VideoOS.GatewayService.Controllers.SessionController.Post[95]: Failed to handle 'Post' SessionController System.Exception: MultiUserEnvironment not initialized.
   at VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus()
   at VideoOS.WebRTC.SessionHandler.InitiateSession(Guid deviceId, String token, IEnumerable`1 iceCandidateServers, Nullable`1 streamId, Nullable`1 playbackTime, Nullable`1 skipGaps, Nullable`1 speed, Boolean includeAudio)
   at VideoOS.GatewayService.Controllers.SessionController.Post(String authorization, WebRTCSession value)
2026-03-27 19:39:44.549+09:00 [    43] DEBUG      - VideoOS.WebRTC.SessionHandler.InitiateSession[70]: Initiating session for deviceId: cbabf9bd-fbc2-40c4-83ea-339525035756 
2026-03-27 19:39:44.549+09:00 [    43] ERROR      - VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus[89]: MultiUserEnvironment has not been initialized. 
2026-03-27 19:39:44.549+09:00 [    43] ERROR      - VideoOS.GatewayService.Controllers.SessionController.Post[95]: Failed to handle 'Post' SessionController System.Exception: MultiUserEnvironment not initialized.
   at VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus()
   at VideoOS.WebRTC.SessionHandler.InitiateSession(Guid deviceId, String token, IEnumerable`1 iceCandidateServers, Nullable`1 streamId, Nullable`1 playbackTime, Nullable`1 skipGaps, Nullable`1 speed, Boolean includeAudio)
   at VideoOS.GatewayService.Controllers.SessionController.Post(String authorization, WebRTCSession value)
2026-03-27 19:39:44.571+09:00 [    43] DEBUG      - VideoOS.WebRTC.SessionHandler.InitiateSession[70]: Initiating session for deviceId: 144059bb-e458-4c89-bee7-e82b809edc48 
2026-03-27 19:39:44.571+09:00 [    43] ERROR      - VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus[89]: MultiUserEnvironment has not been initialized. 
2026-03-27 19:39:44.571+09:00 [    43] ERROR      - VideoOS.GatewayService.Controllers.SessionController.Post[95]: Failed to handle 'Post' SessionController System.Exception: MultiUserEnvironment not initialized.
   at VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus()
   at VideoOS.WebRTC.SessionHandler.InitiateSession(Guid deviceId, String token, IEnumerable`1 iceCandidateServers, Nullable`1 streamId, Nullable`1 playbackTime, Nullable`1 skipGaps, Nullable`1 speed, Boolean includeAudio)
   at VideoOS.GatewayService.Controllers.SessionController.Post(String authorization, WebRTCSession value)
2026-03-27 19:39:44.583+09:00 [    43] DEBUG      - VideoOS.WebRTC.SessionHandler.InitiateSession[70]: Initiating session for deviceId: 94bcb387-0e58-47bd-a76a-cbfe2e7abc86 
2026-03-27 19:39:44.583+09:00 [    43] ERROR      - VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus[89]: MultiUserEnvironment has not been initialized. 
2026-03-27 19:39:44.583+09:00 [    43] ERROR      - VideoOS.GatewayService.Controllers.SessionController.Post[95]: Failed to handle 'Post' SessionController System.Exception: MultiUserEnvironment not initialized.
   at VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus()
   at VideoOS.WebRTC.SessionHandler.InitiateSession(Guid deviceId, String token, IEnumerable`1 iceCandidateServers, Nullable`1 streamId, Nullable`1 playbackTime, Nullable`1 skipGaps, Nullable`1 speed, Boolean includeAudio)
   at VideoOS.GatewayService.Controllers.SessionController.Post(String authorization, WebRTCSession value)
2026-03-27 19:39:44.595+09:00 [    43] DEBUG      - VideoOS.WebRTC.SessionHandler.InitiateSession[70]: Initiating session for deviceId: f131f2e3-fd8d-457a-8d6d-858418301b1d 
2026-03-27 19:39:44.595+09:00 [    43] ERROR      - VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus[89]: MultiUserEnvironment has not been initialized. 
2026-03-27 19:39:44.595+09:00 [    43] ERROR      - VideoOS.GatewayService.Controllers.SessionController.Post[95]: Failed to handle 'Post' SessionController System.Exception: MultiUserEnvironment not initialized.
   at VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus()
   at VideoOS.WebRTC.SessionHandler.InitiateSession(Guid deviceId, String token, IEnumerable`1 iceCandidateServers, Nullable`1 streamId, Nullable`1 playbackTime, Nullable`1 skipGaps, Nullable`1 speed, Boolean includeAudio)
   at VideoOS.GatewayService.Controllers.SessionController.Post(String authorization, WebRTCSession value)
2026-03-27 19:39:46.168+09:00 [    32] DEBUG      - VideoOS.WebRTC.SessionHandler.InitiateSession[70]: Initiating session for deviceId: f131f2e3-fd8d-457a-8d6d-858418301b1d 
2026-03-27 19:39:46.168+09:00 [    32] ERROR      - VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus[89]: MultiUserEnvironment has not been initialized. 
2026-03-27 19:39:46.168+09:00 [    32] ERROR      - VideoOS.GatewayService.Controllers.SessionController.Post[95]: Failed to handle 'Post' SessionController System.Exception: MultiUserEnvironment not initialized.
   at VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus()
   at VideoOS.WebRTC.SessionHandler.InitiateSession(Guid deviceId, String token, IEnumerable`1 iceCandidateServers, Nullable`1 streamId, Nullable`1 playbackTime, Nullable`1 skipGaps, Nullable`1 speed, Boolean includeAudio)
   at VideoOS.GatewayService.Controllers.SessionController.Post(String authorization, WebRTCSession value)
2026-03-27 19:39:46.185+09:00 [    32] DEBUG      - VideoOS.WebRTC.SessionHandler.InitiateSession[70]: Initiating session for deviceId: 144059bb-e458-4c89-bee7-e82b809edc48 
2026-03-27 19:39:46.185+09:00 [    32] ERROR      - VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus[89]: MultiUserEnvironment has not been initialized. 
2026-03-27 19:39:46.185+09:00 [    32] ERROR      - VideoOS.GatewayService.Controllers.SessionController.Post[95]: Failed to handle 'Post' SessionController System.Exception: MultiUserEnvironment not initialized.
   at VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus()
   at VideoOS.WebRTC.SessionHandler.InitiateSession(Guid deviceId, String token, IEnumerable`1 iceCandidateServers, Nullable`1 streamId, Nullable`1 playbackTime, Nullable`1 skipGaps, Nullable`1 speed, Boolean includeAudio)
   at VideoOS.GatewayService.Controllers.SessionController.Post(String authorization, WebRTCSession value)
2026-03-27 19:39:46.197+09:00 [    32] DEBUG      - VideoOS.WebRTC.SessionHandler.InitiateSession[70]: Initiating session for deviceId: cbabf9bd-fbc2-40c4-83ea-339525035756 
2026-03-27 19:39:46.197+09:00 [    32] ERROR      - VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus[89]: MultiUserEnvironment has not been initialized. 
2026-03-27 19:39:46.197+09:00 [    32] ERROR      - VideoOS.GatewayService.Controllers.SessionController.Post[95]: Failed to handle 'Post' SessionController System.Exception: MultiUserEnvironment not initialized.
   at VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus()
   at VideoOS.WebRTC.SessionHandler.InitiateSession(Guid deviceId, String token, IEnumerable`1 iceCandidateServers, Nullable`1 streamId, Nullable`1 playbackTime, Nullable`1 skipGaps, Nullable`1 speed, Boolean includeAudio)
   at VideoOS.GatewayService.Controllers.SessionController.Post(String authorization, WebRTCSession value)
2026-03-27 19:39:46.208+09:00 [    32] DEBUG      - VideoOS.WebRTC.SessionHandler.InitiateSession[70]: Initiating session for deviceId: efa10b58-883c-4f2d-8d67-314b88a101e8 
2026-03-27 19:39:46.208+09:00 [    32] ERROR      - VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus[89]: MultiUserEnvironment has not been initialized. 
2026-03-27 19:39:46.208+09:00 [    32] ERROR      - VideoOS.GatewayService.Controllers.SessionController.Post[95]: Failed to handle 'Post' SessionController System.Exception: MultiUserEnvironment not initialized.
   at VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus()
   at VideoOS.WebRTC.SessionHandler.InitiateSession(Guid deviceId, String token, IEnumerable`1 iceCandidateServers, Nullable`1 streamId, Nullable`1 playbackTime, Nullable`1 skipGaps, Nullable`1 speed, Boolean includeAudio)
   at VideoOS.GatewayService.Controllers.SessionController.Post(String authorization, WebRTCSession value)
2026-03-27 19:39:46.208+09:00 [    32] DEBUG      - VideoOS.WebRTC.SessionHandler.InitiateSession[70]: Initiating session for deviceId: 94bcb387-0e58-47bd-a76a-cbfe2e7abc86 
2026-03-27 19:39:46.208+09:00 [    32] ERROR      - VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus[89]: MultiUserEnvironment has not been initialized. 
2026-03-27 19:39:46.219+09:00 [    32] ERROR      - VideoOS.GatewayService.Controllers.SessionController.Post[95]: Failed to handle 'Post' SessionController System.Exception: MultiUserEnvironment not initialized.
   at VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus()
   at VideoOS.WebRTC.SessionHandler.InitiateSession(Guid deviceId, String token, IEnumerable`1 iceCandidateServers, Nullable`1 streamId, Nullable`1 playbackTime, Nullable`1 skipGaps, Nullable`1 speed, Boolean includeAudio)
   at VideoOS.GatewayService.Controllers.SessionController.Post(String authorization, WebRTCSession value)
2026-03-27 19:39:47.687+09:00 [    20] DEBUG      - VideoOS.WebRTC.SessionHandler.InitiateSession[70]: Initiating session for deviceId: 94bcb387-0e58-47bd-a76a-cbfe2e7abc86 
2026-03-27 19:39:47.687+09:00 [    20] ERROR      - VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus[89]: MultiUserEnvironment has not been initialized. 
2026-03-27 19:39:47.687+09:00 [    20] ERROR      - VideoOS.GatewayService.Controllers.SessionController.Post[95]: Failed to handle 'Post' SessionController System.Exception: MultiUserEnvironment not initialized.
   at VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus()
   at VideoOS.WebRTC.SessionHandler.InitiateSession(Guid deviceId, String token, IEnumerable`1 iceCandidateServers, Nullable`1 streamId, Nullable`1 playbackTime, Nullable`1 skipGaps, Nullable`1 speed, Boolean includeAudio)
   at VideoOS.GatewayService.Controllers.SessionController.Post(String authorization, WebRTCSession value)
2026-03-27 19:39:47.687+09:00 [    20] DEBUG      - VideoOS.WebRTC.SessionHandler.InitiateSession[70]: Initiating session for deviceId: f131f2e3-fd8d-457a-8d6d-858418301b1d 
2026-03-27 19:39:47.687+09:00 [    20] ERROR      - VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus[89]: MultiUserEnvironment has not been initialized. 
2026-03-27 19:39:47.687+09:00 [    20] ERROR      - VideoOS.GatewayService.Controllers.SessionController.Post[95]: Failed to handle 'Post' SessionController System.Exception: MultiUserEnvironment not initialized.
   at VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus()
   at VideoOS.WebRTC.SessionHandler.InitiateSession(Guid deviceId, String token, IEnumerable`1 iceCandidateServers, Nullable`1 streamId, Nullable`1 playbackTime, Nullable`1 skipGaps, Nullable`1 speed, Boolean includeAudio)
   at VideoOS.GatewayService.Controllers.SessionController.Post(String authorization, WebRTCSession value)
2026-03-27 19:39:47.708+09:00 [    20] DEBUG      - VideoOS.WebRTC.SessionHandler.InitiateSession[70]: Initiating session for deviceId: efa10b58-883c-4f2d-8d67-314b88a101e8 
2026-03-27 19:39:47.708+09:00 [    20] ERROR      - VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus[89]: MultiUserEnvironment has not been initialized. 
2026-03-27 19:39:47.708+09:00 [    20] ERROR      - VideoOS.GatewayService.Controllers.SessionController.Post[95]: Failed to handle 'Post' SessionController System.Exception: MultiUserEnvironment not initialized.
   at VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus()
   at VideoOS.WebRTC.SessionHandler.InitiateSession(Guid deviceId, String token, IEnumerable`1 iceCandidateServers, Nullable`1 streamId, Nullable`1 playbackTime, Nullable`1 skipGaps, Nullable`1 speed, Boolean includeAudio)
   at VideoOS.GatewayService.Controllers.SessionController.Post(String authorization, WebRTCSession value)
2026-03-27 19:39:47.722+09:00 [    20] DEBUG      - VideoOS.WebRTC.SessionHandler.InitiateSession[70]: Initiating session for deviceId: 144059bb-e458-4c89-bee7-e82b809edc48 
2026-03-27 19:39:47.722+09:00 [    20] ERROR      - VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus[89]: MultiUserEnvironment has not been initialized. 
2026-03-27 19:39:47.722+09:00 [    20] ERROR      - VideoOS.GatewayService.Controllers.SessionController.Post[95]: Failed to handle 'Post' SessionController System.Exception: MultiUserEnvironment not initialized.
   at VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus()
   at VideoOS.WebRTC.SessionHandler.InitiateSession(Guid deviceId, String token, IEnumerable`1 iceCandidateServers, Nullable`1 streamId, Nullable`1 playbackTime, Nullable`1 skipGaps, Nullable`1 speed, Boolean includeAudio)
   at VideoOS.GatewayService.Controllers.SessionController.Post(String authorization, WebRTCSession value)
2026-03-27 19:39:47.722+09:00 [    20] DEBUG      - VideoOS.WebRTC.SessionHandler.InitiateSession[70]: Initiating session for deviceId: cbabf9bd-fbc2-40c4-83ea-339525035756 
2026-03-27 19:39:47.735+09:00 [    20] ERROR      - VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus[89]: MultiUserEnvironment has not been initialized. 
2026-03-27 19:39:47.735+09:00 [    20] ERROR      - VideoOS.GatewayService.Controllers.SessionController.Post[95]: Failed to handle 'Post' SessionController System.Exception: MultiUserEnvironment not initialized.
   at VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus()
   at VideoOS.WebRTC.SessionHandler.InitiateSession(Guid deviceId, String token, IEnumerable`1 iceCandidateServers, Nullable`1 streamId, Nullable`1 playbackTime, Nullable`1 skipGaps, Nullable`1 speed, Boolean includeAudio)
   at VideoOS.GatewayService.Controllers.SessionController.Post(String authorization, WebRTCSession value)
2026-03-27 19:39:49.703+09:00 [    20] DEBUG      - VideoOS.WebRTC.SessionHandler.InitiateSession[70]: Initiating session for deviceId: efa10b58-883c-4f2d-8d67-314b88a101e8 
2026-03-27 19:39:49.703+09:00 [    20] ERROR      - VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus[89]: MultiUserEnvironment has not been initialized. 
2026-03-27 19:39:49.703+09:00 [    20] ERROR      - VideoOS.GatewayService.Controllers.SessionController.Post[95]: Failed to handle 'Post' SessionController System.Exception: MultiUserEnvironment not initialized.
   at VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus()
   at VideoOS.WebRTC.SessionHandler.InitiateSession(Guid deviceId, String token, IEnumerable`1 iceCandidateServers, Nullable`1 streamId, Nullable`1 playbackTime, Nullable`1 skipGaps, Nullable`1 speed, Boolean includeAudio)
   at VideoOS.GatewayService.Controllers.SessionController.Post(String authorization, WebRTCSession value)
2026-03-27 19:39:49.703+09:00 [    20] DEBUG      - VideoOS.WebRTC.SessionHandler.InitiateSession[70]: Initiating session for deviceId: cbabf9bd-fbc2-40c4-83ea-339525035756 
2026-03-27 19:39:49.703+09:00 [    20] ERROR      - VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus[89]: MultiUserEnvironment has not been initialized. 
2026-03-27 19:39:49.703+09:00 [    20] ERROR      - VideoOS.GatewayService.Controllers.SessionController.Post[95]: Failed to handle 'Post' SessionController System.Exception: MultiUserEnvironment not initialized.
   at VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus()
   at VideoOS.WebRTC.SessionHandler.InitiateSession(Guid deviceId, String token, IEnumerable`1 iceCandidateServers, Nullable`1 streamId, Nullable`1 playbackTime, Nullable`1 skipGaps, Nullable`1 speed, Boolean includeAudio)
   at VideoOS.GatewayService.Controllers.SessionController.Post(String authorization, WebRTCSession value)
2026-03-27 19:39:49.726+09:00 [    20] DEBUG      - VideoOS.WebRTC.SessionHandler.InitiateSession[70]: Initiating session for deviceId: f131f2e3-fd8d-457a-8d6d-858418301b1d 
2026-03-27 19:39:49.726+09:00 [    20] ERROR      - VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus[89]: MultiUserEnvironment has not been initialized. 
2026-03-27 19:39:49.726+09:00 [    20] ERROR      - VideoOS.GatewayService.Controllers.SessionController.Post[95]: Failed to handle 'Post' SessionController System.Exception: MultiUserEnvironment not initialized.
   at VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus()
   at VideoOS.WebRTC.SessionHandler.InitiateSession(Guid deviceId, String token, IEnumerable`1 iceCandidateServers, Nullable`1 streamId, Nullable`1 playbackTime, Nullable`1 skipGaps, Nullable`1 speed, Boolean includeAudio)
   at VideoOS.GatewayService.Controllers.SessionController.Post(String authorization, WebRTCSession value)
2026-03-27 19:39:49.741+09:00 [    20] DEBUG      - VideoOS.WebRTC.SessionHandler.InitiateSession[70]: Initiating session for deviceId: 144059bb-e458-4c89-bee7-e82b809edc48 
2026-03-27 19:39:49.741+09:00 [    20] ERROR      - VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus[89]: MultiUserEnvironment has not been initialized. 
2026-03-27 19:39:49.741+09:00 [    20] ERROR      - VideoOS.GatewayService.Controllers.SessionController.Post[95]: Failed to handle 'Post' SessionController System.Exception: MultiUserEnvironment not initialized.
   at VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus()
   at VideoOS.WebRTC.SessionHandler.InitiateSession(Guid deviceId, String token, IEnumerable`1 iceCandidateServers, Nullable`1 streamId, Nullable`1 playbackTime, Nullable`1 skipGaps, Nullable`1 speed, Boolean includeAudio)
   at VideoOS.GatewayService.Controllers.SessionController.Post(String authorization, WebRTCSession value)
2026-03-27 19:39:49.753+09:00 [    20] DEBUG      - VideoOS.WebRTC.SessionHandler.InitiateSession[70]: Initiating session for deviceId: 94bcb387-0e58-47bd-a76a-cbfe2e7abc86 
2026-03-27 19:39:49.753+09:00 [    20] ERROR      - VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus[89]: MultiUserEnvironment has not been initialized. 
2026-03-27 19:39:49.753+09:00 [    20] ERROR      - VideoOS.GatewayService.Controllers.SessionController.Post[95]: Failed to handle 'Post' SessionController System.Exception: MultiUserEnvironment not initialized.
   at VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus()
   at VideoOS.WebRTC.SessionHandler.InitiateSession(Guid deviceId, String token, IEnumerable`1 iceCandidateServers, Nullable`1 streamId, Nullable`1 playbackTime, Nullable`1 skipGaps, Nullable`1 speed, Boolean includeAudio)
   at VideoOS.GatewayService.Controllers.SessionController.Post(String authorization, WebRTCSession value)
2026-03-27 19:39:51.270+09:00 [    20] DEBUG      - VideoOS.WebRTC.SessionHandler.InitiateSession[70]: Initiating session for deviceId: cbabf9bd-fbc2-40c4-83ea-339525035756 
2026-03-27 19:39:51.270+09:00 [    20] ERROR      - VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus[89]: MultiUserEnvironment has not been initialized. 
2026-03-27 19:39:51.270+09:00 [    20] ERROR      - VideoOS.GatewayService.Controllers.SessionController.Post[95]: Failed to handle 'Post' SessionController System.Exception: MultiUserEnvironment not initialized.
   at VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus()
   at VideoOS.WebRTC.SessionHandler.InitiateSession(Guid deviceId, String token, IEnumerable`1 iceCandidateServers, Nullable`1 streamId, Nullable`1 playbackTime, Nullable`1 skipGaps, Nullable`1 speed, Boolean includeAudio)
   at VideoOS.GatewayService.Controllers.SessionController.Post(String authorization, WebRTCSession value)
2026-03-27 19:39:51.270+09:00 [    20] DEBUG      - VideoOS.WebRTC.SessionHandler.InitiateSession[70]: Initiating session for deviceId: 94bcb387-0e58-47bd-a76a-cbfe2e7abc86 
2026-03-27 19:39:51.270+09:00 [    20] ERROR      - VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus[89]: MultiUserEnvironment has not been initialized. 
2026-03-27 19:39:51.281+09:00 [    20] ERROR      - VideoOS.GatewayService.Controllers.SessionController.Post[95]: Failed to handle 'Post' SessionController System.Exception: MultiUserEnvironment not initialized.
   at VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus()
   at VideoOS.WebRTC.SessionHandler.InitiateSession(Guid deviceId, String token, IEnumerable`1 iceCandidateServers, Nullable`1 streamId, Nullable`1 playbackTime, Nullable`1 skipGaps, Nullable`1 speed, Boolean includeAudio)
   at VideoOS.GatewayService.Controllers.SessionController.Post(String authorization, WebRTCSession value)
2026-03-27 19:39:51.281+09:00 [    20] DEBUG      - VideoOS.WebRTC.SessionHandler.InitiateSession[70]: Initiating session for deviceId: 144059bb-e458-4c89-bee7-e82b809edc48 
2026-03-27 19:39:51.281+09:00 [    20] ERROR      - VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus[89]: MultiUserEnvironment has not been initialized. 
2026-03-27 19:39:51.281+09:00 [    20] ERROR      - VideoOS.GatewayService.Controllers.SessionController.Post[95]: Failed to handle 'Post' SessionController System.Exception: MultiUserEnvironment not initialized.
   at VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus()
   at VideoOS.WebRTC.SessionHandler.InitiateSession(Guid deviceId, String token, IEnumerable`1 iceCandidateServers, Nullable`1 streamId, Nullable`1 playbackTime, Nullable`1 skipGaps, Nullable`1 speed, Boolean includeAudio)
   at VideoOS.GatewayService.Controllers.SessionController.Post(String authorization, WebRTCSession value)
2026-03-27 19:39:51.302+09:00 [    20] DEBUG      - VideoOS.WebRTC.SessionHandler.InitiateSession[70]: Initiating session for deviceId: f131f2e3-fd8d-457a-8d6d-858418301b1d 
2026-03-27 19:39:51.302+09:00 [    20] ERROR      - VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus[89]: MultiUserEnvironment has not been initialized. 
2026-03-27 19:39:51.302+09:00 [    20] ERROR      - VideoOS.GatewayService.Controllers.SessionController.Post[95]: Failed to handle 'Post' SessionController System.Exception: MultiUserEnvironment not initialized.
   at VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus()
   at VideoOS.WebRTC.SessionHandler.InitiateSession(Guid deviceId, String token, IEnumerable`1 iceCandidateServers, Nullable`1 streamId, Nullable`1 playbackTime, Nullable`1 skipGaps, Nullable`1 speed, Boolean includeAudio)
   at VideoOS.GatewayService.Controllers.SessionController.Post(String authorization, WebRTCSession value)
2026-03-27 19:39:51.302+09:00 [    20] DEBUG      - VideoOS.WebRTC.SessionHandler.InitiateSession[70]: Initiating session for deviceId: efa10b58-883c-4f2d-8d67-314b88a101e8 
2026-03-27 19:39:51.312+09:00 [    20] ERROR      - VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus[89]: MultiUserEnvironment has not been initialized. 
2026-03-27 19:39:51.312+09:00 [    20] ERROR      - VideoOS.GatewayService.Controllers.SessionController.Post[95]: Failed to handle 'Post' SessionController System.Exception: MultiUserEnvironment not initialized.
   at VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus()
   at VideoOS.WebRTC.SessionHandler.InitiateSession(Guid deviceId, String token, IEnumerable`1 iceCandidateServers, Nullable`1 streamId, Nullable`1 playbackTime, Nullable`1 skipGaps, Nullable`1 speed, Boolean includeAudio)
   at VideoOS.GatewayService.Controllers.SessionController.Post(String authorization, WebRTCSession value)
2026-03-27 19:39:52.949+09:00 [    20] DEBUG      - VideoOS.WebRTC.SessionHandler.InitiateSession[70]: Initiating session for deviceId: f131f2e3-fd8d-457a-8d6d-858418301b1d 
2026-03-27 19:39:52.949+09:00 [    20] ERROR      - VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus[89]: MultiUserEnvironment has not been initialized. 
2026-03-27 19:39:52.949+09:00 [    20] ERROR      - VideoOS.GatewayService.Controllers.SessionController.Post[95]: Failed to handle 'Post' SessionController System.Exception: MultiUserEnvironment not initialized.
   at VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus()
   at VideoOS.WebRTC.SessionHandler.InitiateSession(Guid deviceId, String token, IEnumerable`1 iceCandidateServers, Nullable`1 streamId, Nullable`1 playbackTime, Nullable`1 skipGaps, Nullable`1 speed, Boolean includeAudio)
   at VideoOS.GatewayService.Controllers.SessionController.Post(String authorization, WebRTCSession value)
2026-03-27 19:39:52.960+09:00 [    20] DEBUG      - VideoOS.WebRTC.SessionHandler.InitiateSession[70]: Initiating session for deviceId: cbabf9bd-fbc2-40c4-83ea-339525035756 
2026-03-27 19:39:52.960+09:00 [    20] ERROR      - VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus[89]: MultiUserEnvironment has not been initialized. 
2026-03-27 19:39:52.960+09:00 [    20] ERROR      - VideoOS.GatewayService.Controllers.SessionController.Post[95]: Failed to handle 'Post' SessionController System.Exception: MultiUserEnvironment not initialized.
   at VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus()
   at VideoOS.WebRTC.SessionHandler.InitiateSession(Guid deviceId, String token, IEnumerable`1 iceCandidateServers, Nullable`1 streamId, Nullable`1 playbackTime, Nullable`1 skipGaps, Nullable`1 speed, Boolean includeAudio)
   at VideoOS.GatewayService.Controllers.SessionController.Post(String authorization, WebRTCSession value)
2026-03-27 19:39:52.970+09:00 [    20] DEBUG      - VideoOS.WebRTC.SessionHandler.InitiateSession[70]: Initiating session for deviceId: efa10b58-883c-4f2d-8d67-314b88a101e8 
2026-03-27 19:39:52.970+09:00 [    20] ERROR      - VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus[89]: MultiUserEnvironment has not been initialized. 
2026-03-27 19:39:52.970+09:00 [    20] ERROR      - VideoOS.GatewayService.Controllers.SessionController.Post[95]: Failed to handle 'Post' SessionController System.Exception: MultiUserEnvironment not initialized.
   at VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus()
   at VideoOS.WebRTC.SessionHandler.InitiateSession(Guid deviceId, String token, IEnumerable`1 iceCandidateServers, Nullable`1 streamId, Nullable`1 playbackTime, Nullable`1 skipGaps, Nullable`1 speed, Boolean includeAudio)
   at VideoOS.GatewayService.Controllers.SessionController.Post(String authorization, WebRTCSession value)
2026-03-27 19:39:52.970+09:00 [    20] DEBUG      - VideoOS.WebRTC.SessionHandler.InitiateSession[70]: Initiating session for deviceId: 144059bb-e458-4c89-bee7-e82b809edc48 
2026-03-27 19:39:52.970+09:00 [    20] ERROR      - VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus[89]: MultiUserEnvironment has not been initialized. 
2026-03-27 19:39:52.970+09:00 [    20] ERROR      - VideoOS.GatewayService.Controllers.SessionController.Post[95]: Failed to handle 'Post' SessionController System.Exception: MultiUserEnvironment not initialized.
   at VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus()
   at VideoOS.WebRTC.SessionHandler.InitiateSession(Guid deviceId, String token, IEnumerable`1 iceCandidateServers, Nullable`1 streamId, Nullable`1 playbackTime, Nullable`1 skipGaps, Nullable`1 speed, Boolean includeAudio)
   at VideoOS.GatewayService.Controllers.SessionController.Post(String authorization, WebRTCSession value)
2026-03-27 19:39:52.997+09:00 [    20] DEBUG      - VideoOS.WebRTC.SessionHandler.InitiateSession[70]: Initiating session for deviceId: 94bcb387-0e58-47bd-a76a-cbfe2e7abc86 
2026-03-27 19:39:52.997+09:00 [    20] ERROR      - VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus[89]: MultiUserEnvironment has not been initialized. 
2026-03-27 19:39:52.997+09:00 [    20] ERROR      - VideoOS.GatewayService.Controllers.SessionController.Post[95]: Failed to handle 'Post' SessionController System.Exception: MultiUserEnvironment not initialized.
   at VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus()
   at VideoOS.WebRTC.SessionHandler.InitiateSession(Guid deviceId, String token, IEnumerable`1 iceCandidateServers, Nullable`1 streamId, Nullable`1 playbackTime, Nullable`1 skipGaps, Nullable`1 speed, Boolean includeAudio)
   at VideoOS.GatewayService.Controllers.SessionController.Post(String authorization, WebRTCSession value)
2026-03-27 19:39:54.468+09:00 [    20] DEBUG      - VideoOS.WebRTC.SessionHandler.InitiateSession[70]: Initiating session for deviceId: f131f2e3-fd8d-457a-8d6d-858418301b1d 
2026-03-27 19:39:54.469+09:00 [    20] ERROR      - VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus[89]: MultiUserEnvironment has not been initialized. 
2026-03-27 19:39:54.469+09:00 [    20] ERROR      - VideoOS.GatewayService.Controllers.SessionController.Post[95]: Failed to handle 'Post' SessionController System.Exception: MultiUserEnvironment not initialized.
   at VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus()
   at VideoOS.WebRTC.SessionHandler.InitiateSession(Guid deviceId, String token, IEnumerable`1 iceCandidateServers, Nullable`1 streamId, Nullable`1 playbackTime, Nullable`1 skipGaps, Nullable`1 speed, Boolean includeAudio)
   at VideoOS.GatewayService.Controllers.SessionController.Post(String authorization, WebRTCSession value)
2026-03-27 19:39:54.469+09:00 [    20] DEBUG      - VideoOS.WebRTC.SessionHandler.InitiateSession[70]: Initiating session for deviceId: 94bcb387-0e58-47bd-a76a-cbfe2e7abc86 
2026-03-27 19:39:54.469+09:00 [    20] ERROR      - VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus[89]: MultiUserEnvironment has not been initialized. 
2026-03-27 19:39:54.469+09:00 [    20] ERROR      - VideoOS.GatewayService.Controllers.SessionController.Post[95]: Failed to handle 'Post' SessionController System.Exception: MultiUserEnvironment not initialized.
   at VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus()
   at VideoOS.WebRTC.SessionHandler.InitiateSession(Guid deviceId, String token, IEnumerable`1 iceCandidateServers, Nullable`1 streamId, Nullable`1 playbackTime, Nullable`1 skipGaps, Nullable`1 speed, Boolean includeAudio)
   at VideoOS.GatewayService.Controllers.SessionController.Post(String authorization, WebRTCSession value)
2026-03-27 19:39:54.493+09:00 [    20] DEBUG      - VideoOS.WebRTC.SessionHandler.InitiateSession[70]: Initiating session for deviceId: cbabf9bd-fbc2-40c4-83ea-339525035756 
2026-03-27 19:39:54.493+09:00 [    20] ERROR      - VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus[89]: MultiUserEnvironment has not been initialized. 
2026-03-27 19:39:54.493+09:00 [    20] ERROR      - VideoOS.GatewayService.Controllers.SessionController.Post[95]: Failed to handle 'Post' SessionController System.Exception: MultiUserEnvironment not initialized.
   at VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus()
   at VideoOS.WebRTC.SessionHandler.InitiateSession(Guid deviceId, String token, IEnumerable`1 iceCandidateServers, Nullable`1 streamId, Nullable`1 playbackTime, Nullable`1 skipGaps, Nullable`1 speed, Boolean includeAudio)
   at VideoOS.GatewayService.Controllers.SessionController.Post(String authorization, WebRTCSession value)
2026-03-27 19:39:54.504+09:00 [    20] DEBUG      - VideoOS.WebRTC.SessionHandler.InitiateSession[70]: Initiating session for deviceId: 144059bb-e458-4c89-bee7-e82b809edc48 
2026-03-27 19:39:54.504+09:00 [    20] ERROR      - VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus[89]: MultiUserEnvironment has not been initialized. 
2026-03-27 19:39:54.504+09:00 [    20] ERROR      - VideoOS.GatewayService.Controllers.SessionController.Post[95]: Failed to handle 'Post' SessionController System.Exception: MultiUserEnvironment not initialized.
   at VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus()
   at VideoOS.WebRTC.SessionHandler.InitiateSession(Guid deviceId, String token, IEnumerable`1 iceCandidateServers, Nullable`1 streamId, Nullable`1 playbackTime, Nullable`1 skipGaps, Nullable`1 speed, Boolean includeAudio)
   at VideoOS.GatewayService.Controllers.SessionController.Post(String authorization, WebRTCSession value)
2026-03-27 19:39:54.504+09:00 [    20] DEBUG      - VideoOS.WebRTC.SessionHandler.InitiateSession[70]: Initiating session for deviceId: efa10b58-883c-4f2d-8d67-314b88a101e8 
2026-03-27 19:39:54.504+09:00 [    20] ERROR      - VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus[89]: MultiUserEnvironment has not been initialized. 
2026-03-27 19:39:54.504+09:00 [    20] ERROR      - VideoOS.GatewayService.Controllers.SessionController.Post[95]: Failed to handle 'Post' SessionController System.Exception: MultiUserEnvironment not initialized.
   at VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus()
   at VideoOS.WebRTC.SessionHandler.InitiateSession(Guid deviceId, String token, IEnumerable`1 iceCandidateServers, Nullable`1 streamId, Nullable`1 playbackTime, Nullable`1 skipGaps, Nullable`1 speed, Boolean includeAudio)
   at VideoOS.GatewayService.Controllers.SessionController.Post(String authorization, WebRTCSession value)
2026-03-27 19:39:56.534+09:00 [    43] DEBUG      - VideoOS.WebRTC.SessionHandler.InitiateSession[70]: Initiating session for deviceId: efa10b58-883c-4f2d-8d67-314b88a101e8 
2026-03-27 19:39:56.534+09:00 [    43] ERROR      - VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus[89]: MultiUserEnvironment has not been initialized. 
2026-03-27 19:39:56.534+09:00 [    43] ERROR      - VideoOS.GatewayService.Controllers.SessionController.Post[95]: Failed to handle 'Post' SessionController System.Exception: MultiUserEnvironment not initialized.
   at VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus()
   at VideoOS.WebRTC.SessionHandler.InitiateSession(Guid deviceId, String token, IEnumerable`1 iceCandidateServers, Nullable`1 streamId, Nullable`1 playbackTime, Nullable`1 skipGaps, Nullable`1 speed, Boolean includeAudio)
   at VideoOS.GatewayService.Controllers.SessionController.Post(String authorization, WebRTCSession value)
2026-03-27 19:39:56.534+09:00 [    43] DEBUG      - VideoOS.WebRTC.SessionHandler.InitiateSession[70]: Initiating session for deviceId: cbabf9bd-fbc2-40c4-83ea-339525035756 
2026-03-27 19:39:56.534+09:00 [    43] ERROR      - VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus[89]: MultiUserEnvironment has not been initialized. 
2026-03-27 19:39:56.534+09:00 [    43] ERROR      - VideoOS.GatewayService.Controllers.SessionController.Post[95]: Failed to handle 'Post' SessionController System.Exception: MultiUserEnvironment not initialized.
   at VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus()
   at VideoOS.WebRTC.SessionHandler.InitiateSession(Guid deviceId, String token, IEnumerable`1 iceCandidateServers, Nullable`1 streamId, Nullable`1 playbackTime, Nullable`1 skipGaps, Nullable`1 speed, Boolean includeAudio)
   at VideoOS.GatewayService.Controllers.SessionController.Post(String authorization, WebRTCSession value)
2026-03-27 19:39:56.555+09:00 [    43] DEBUG      - VideoOS.WebRTC.SessionHandler.InitiateSession[70]: Initiating session for deviceId: f131f2e3-fd8d-457a-8d6d-858418301b1d 
2026-03-27 19:39:56.555+09:00 [    43] ERROR      - VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus[89]: MultiUserEnvironment has not been initialized. 
2026-03-27 19:39:56.555+09:00 [    43] ERROR      - VideoOS.GatewayService.Controllers.SessionController.Post[95]: Failed to handle 'Post' SessionController System.Exception: MultiUserEnvironment not initialized.
   at VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus()
   at VideoOS.WebRTC.SessionHandler.InitiateSession(Guid deviceId, String token, IEnumerable`1 iceCandidateServers, Nullable`1 streamId, Nullable`1 playbackTime, Nullable`1 skipGaps, Nullable`1 speed, Boolean includeAudio)
   at VideoOS.GatewayService.Controllers.SessionController.Post(String authorization, WebRTCSession value)
2026-03-27 19:39:56.566+09:00 [    43] DEBUG      - VideoOS.WebRTC.SessionHandler.InitiateSession[70]: Initiating session for deviceId: 94bcb387-0e58-47bd-a76a-cbfe2e7abc86 
2026-03-27 19:39:56.566+09:00 [    43] ERROR      - VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus[89]: MultiUserEnvironment has not been initialized. 
2026-03-27 19:39:56.566+09:00 [    43] ERROR      - VideoOS.GatewayService.Controllers.SessionController.Post[95]: Failed to handle 'Post' SessionController System.Exception: MultiUserEnvironment not initialized.
   at VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus()
   at VideoOS.WebRTC.SessionHandler.InitiateSession(Guid deviceId, String token, IEnumerable`1 iceCandidateServers, Nullable`1 streamId, Nullable`1 playbackTime, Nullable`1 skipGaps, Nullable`1 speed, Boolean includeAudio)
   at VideoOS.GatewayService.Controllers.SessionController.Post(String authorization, WebRTCSession value)
2026-03-27 19:39:56.566+09:00 [    43] DEBUG      - VideoOS.WebRTC.SessionHandler.InitiateSession[70]: Initiating session for deviceId: 144059bb-e458-4c89-bee7-e82b809edc48 
2026-03-27 19:39:56.566+09:00 [    43] ERROR      - VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus[89]: MultiUserEnvironment has not been initialized. 
2026-03-27 19:39:56.566+09:00 [    43] ERROR      - VideoOS.GatewayService.Controllers.SessionController.Post[95]: Failed to handle 'Post' SessionController System.Exception: MultiUserEnvironment not initialized.
   at VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus()
   at VideoOS.WebRTC.SessionHandler.InitiateSession(Guid deviceId, String token, IEnumerable`1 iceCandidateServers, Nullable`1 streamId, Nullable`1 playbackTime, Nullable`1 skipGaps, Nullable`1 speed, Boolean includeAudio)
   at VideoOS.GatewayService.Controllers.SessionController.Post(String authorization, WebRTCSession value)
2026-03-27 19:39:58.105+09:00 [    41] DEBUG      - VideoOS.WebRTC.SessionHandler.InitiateSession[70]: Initiating session for deviceId: f131f2e3-fd8d-457a-8d6d-858418301b1d 
2026-03-27 19:39:58.105+09:00 [    41] ERROR      - VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus[89]: MultiUserEnvironment has not been initialized. 
2026-03-27 19:39:58.105+09:00 [    41] ERROR      - VideoOS.GatewayService.Controllers.SessionController.Post[95]: Failed to handle 'Post' SessionController System.Exception: MultiUserEnvironment not initialized.
   at VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus()
   at VideoOS.WebRTC.SessionHandler.InitiateSession(Guid deviceId, String token, IEnumerable`1 iceCandidateServers, Nullable`1 streamId, Nullable`1 playbackTime, Nullable`1 skipGaps, Nullable`1 speed, Boolean includeAudio)
   at VideoOS.GatewayService.Controllers.SessionController.Post(String authorization, WebRTCSession value)
2026-03-27 19:39:58.116+09:00 [    41] DEBUG      - VideoOS.WebRTC.SessionHandler.InitiateSession[70]: Initiating session for deviceId: 94bcb387-0e58-47bd-a76a-cbfe2e7abc86 
2026-03-27 19:39:58.116+09:00 [    41] ERROR      - VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus[89]: MultiUserEnvironment has not been initialized. 
2026-03-27 19:39:58.116+09:00 [    41] ERROR      - VideoOS.GatewayService.Controllers.SessionController.Post[95]: Failed to handle 'Post' SessionController System.Exception: MultiUserEnvironment not initialized.
   at VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus()
   at VideoOS.WebRTC.SessionHandler.InitiateSession(Guid deviceId, String token, IEnumerable`1 iceCandidateServers, Nullable`1 streamId, Nullable`1 playbackTime, Nullable`1 skipGaps, Nullable`1 speed, Boolean includeAudio)
   at VideoOS.GatewayService.Controllers.SessionController.Post(String authorization, WebRTCSession value)
2026-03-27 19:39:58.127+09:00 [    41] DEBUG      - VideoOS.WebRTC.SessionHandler.InitiateSession[70]: Initiating session for deviceId: efa10b58-883c-4f2d-8d67-314b88a101e8 
2026-03-27 19:39:58.127+09:00 [    41] ERROR      - VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus[89]: MultiUserEnvironment has not been initialized. 
2026-03-27 19:39:58.127+09:00 [    41] ERROR      - VideoOS.GatewayService.Controllers.SessionController.Post[95]: Failed to handle 'Post' SessionController System.Exception: MultiUserEnvironment not initialized.
   at VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus()
   at VideoOS.WebRTC.SessionHandler.InitiateSession(Guid deviceId, String token, IEnumerable`1 iceCandidateServers, Nullable`1 streamId, Nullable`1 playbackTime, Nullable`1 skipGaps, Nullable`1 speed, Boolean includeAudio)
   at VideoOS.GatewayService.Controllers.SessionController.Post(String authorization, WebRTCSession value)
2026-03-27 19:39:58.127+09:00 [    41] DEBUG      - VideoOS.WebRTC.SessionHandler.InitiateSession[70]: Initiating session for deviceId: cbabf9bd-fbc2-40c4-83ea-339525035756 
2026-03-27 19:39:58.127+09:00 [    41] ERROR      - VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus[89]: MultiUserEnvironment has not been initialized. 
2026-03-27 19:39:58.127+09:00 [    41] ERROR      - VideoOS.GatewayService.Controllers.SessionController.Post[95]: Failed to handle 'Post' SessionController System.Exception: MultiUserEnvironment not initialized.
   at VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus()
   at VideoOS.WebRTC.SessionHandler.InitiateSession(Guid deviceId, String token, IEnumerable`1 iceCandidateServers, Nullable`1 streamId, Nullable`1 playbackTime, Nullable`1 skipGaps, Nullable`1 speed, Boolean includeAudio)
   at VideoOS.GatewayService.Controllers.SessionController.Post(String authorization, WebRTCSession value)
2026-03-27 19:39:58.149+09:00 [    41] DEBUG      - VideoOS.WebRTC.SessionHandler.InitiateSession[70]: Initiating session for deviceId: 144059bb-e458-4c89-bee7-e82b809edc48 
2026-03-27 19:39:58.149+09:00 [    41] ERROR      - VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus[89]: MultiUserEnvironment has not been initialized. 
2026-03-27 19:39:58.149+09:00 [    41] ERROR      - VideoOS.GatewayService.Controllers.SessionController.Post[95]: Failed to handle 'Post' SessionController System.Exception: MultiUserEnvironment not initialized.
   at VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus()
   at VideoOS.WebRTC.SessionHandler.InitiateSession(Guid deviceId, String token, IEnumerable`1 iceCandidateServers, Nullable`1 streamId, Nullable`1 playbackTime, Nullable`1 skipGaps, Nullable`1 speed, Boolean includeAudio)
   at VideoOS.GatewayService.Controllers.SessionController.Post(String authorization, WebRTCSession value)
2026-03-27 19:39:59.842+09:00 [    37] DEBUG      - VideoOS.WebRTC.SessionHandler.InitiateSession[70]: Initiating session for deviceId: cbabf9bd-fbc2-40c4-83ea-339525035756 
2026-03-27 19:39:59.842+09:00 [    37] ERROR      - VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus[89]: MultiUserEnvironment has not been initialized. 
2026-03-27 19:39:59.842+09:00 [    37] ERROR      - VideoOS.GatewayService.Controllers.SessionController.Post[95]: Failed to handle 'Post' SessionController System.Exception: MultiUserEnvironment not initialized.
   at VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus()
   at VideoOS.WebRTC.SessionHandler.InitiateSession(Guid deviceId, String token, IEnumerable`1 iceCandidateServers, Nullable`1 streamId, Nullable`1 playbackTime, Nullable`1 skipGaps, Nullable`1 speed, Boolean includeAudio)
   at VideoOS.GatewayService.Controllers.SessionController.Post(String authorization, WebRTCSession value)
2026-03-27 19:39:59.853+09:00 [    37] DEBUG      - VideoOS.WebRTC.SessionHandler.InitiateSession[70]: Initiating session for deviceId: efa10b58-883c-4f2d-8d67-314b88a101e8 
2026-03-27 19:39:59.853+09:00 [    37] ERROR      - VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus[89]: MultiUserEnvironment has not been initialized. 
2026-03-27 19:39:59.853+09:00 [    37] ERROR      - VideoOS.GatewayService.Controllers.SessionController.Post[95]: Failed to handle 'Post' SessionController System.Exception: MultiUserEnvironment not initialized.
   at VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus()
   at VideoOS.WebRTC.SessionHandler.InitiateSession(Guid deviceId, String token, IEnumerable`1 iceCandidateServers, Nullable`1 streamId, Nullable`1 playbackTime, Nullable`1 skipGaps, Nullable`1 speed, Boolean includeAudio)
   at VideoOS.GatewayService.Controllers.SessionController.Post(String authorization, WebRTCSession value)
2026-03-27 19:39:59.864+09:00 [    37] DEBUG      - VideoOS.WebRTC.SessionHandler.InitiateSession[70]: Initiating session for deviceId: f131f2e3-fd8d-457a-8d6d-858418301b1d 
2026-03-27 19:39:59.864+09:00 [    37] ERROR      - VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus[89]: MultiUserEnvironment has not been initialized. 
2026-03-27 19:39:59.864+09:00 [    37] ERROR      - VideoOS.GatewayService.Controllers.SessionController.Post[95]: Failed to handle 'Post' SessionController System.Exception: MultiUserEnvironment not initialized.
   at VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus()
   at VideoOS.WebRTC.SessionHandler.InitiateSession(Guid deviceId, String token, IEnumerable`1 iceCandidateServers, Nullable`1 streamId, Nullable`1 playbackTime, Nullable`1 skipGaps, Nullable`1 speed, Boolean includeAudio)
   at VideoOS.GatewayService.Controllers.SessionController.Post(String authorization, WebRTCSession value)
2026-03-27 19:39:59.864+09:00 [    37] DEBUG      - VideoOS.WebRTC.SessionHandler.InitiateSession[70]: Initiating session for deviceId: 94bcb387-0e58-47bd-a76a-cbfe2e7abc86 
2026-03-27 19:39:59.864+09:00 [    37] ERROR      - VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus[89]: MultiUserEnvironment has not been initialized. 
2026-03-27 19:39:59.864+09:00 [    37] ERROR      - VideoOS.GatewayService.Controllers.SessionController.Post[95]: Failed to handle 'Post' SessionController System.Exception: MultiUserEnvironment not initialized.
   at VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus()
   at VideoOS.WebRTC.SessionHandler.InitiateSession(Guid deviceId, String token, IEnumerable`1 iceCandidateServers, Nullable`1 streamId, Nullable`1 playbackTime, Nullable`1 skipGaps, Nullable`1 speed, Boolean includeAudio)
   at VideoOS.GatewayService.Controllers.SessionController.Post(String authorization, WebRTCSession value)
2026-03-27 19:39:59.884+09:00 [    37] DEBUG      - VideoOS.WebRTC.SessionHandler.InitiateSession[70]: Initiating session for deviceId: 144059bb-e458-4c89-bee7-e82b809edc48 
2026-03-27 19:39:59.884+09:00 [    37] ERROR      - VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus[89]: MultiUserEnvironment has not been initialized. 
2026-03-27 19:39:59.884+09:00 [    37] ERROR      - VideoOS.GatewayService.Controllers.SessionController.Post[95]: Failed to handle 'Post' SessionController System.Exception: MultiUserEnvironment not initialized.
   at VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus()
   at VideoOS.WebRTC.SessionHandler.InitiateSession(Guid deviceId, String token, IEnumerable`1 iceCandidateServers, Nullable`1 streamId, Nullable`1 playbackTime, Nullable`1 skipGaps, Nullable`1 speed, Boolean includeAudio)
   at VideoOS.GatewayService.Controllers.SessionController.Post(String authorization, WebRTCSession value)
2026-03-27 19:40:02.109+09:00 [    42] DEBUG      - VideoOS.WebRTC.SessionHandler.InitiateSession[70]: Initiating session for deviceId: efa10b58-883c-4f2d-8d67-314b88a101e8 
2026-03-27 19:40:02.109+09:00 [    42] ERROR      - VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus[89]: MultiUserEnvironment has not been initialized. 
2026-03-27 19:40:02.110+09:00 [    42] ERROR      - VideoOS.GatewayService.Controllers.SessionController.Post[95]: Failed to handle 'Post' SessionController System.Exception: MultiUserEnvironment not initialized.
   at VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus()
   at VideoOS.WebRTC.SessionHandler.InitiateSession(Guid deviceId, String token, IEnumerable`1 iceCandidateServers, Nullable`1 streamId, Nullable`1 playbackTime, Nullable`1 skipGaps, Nullable`1 speed, Boolean includeAudio)
   at VideoOS.GatewayService.Controllers.SessionController.Post(String authorization, WebRTCSession value)
2026-03-27 19:40:02.110+09:00 [    42] DEBUG      - VideoOS.WebRTC.SessionHandler.InitiateSession[70]: Initiating session for deviceId: 144059bb-e458-4c89-bee7-e82b809edc48 
2026-03-27 19:40:02.110+09:00 [    42] ERROR      - VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus[89]: MultiUserEnvironment has not been initialized. 
2026-03-27 19:40:02.110+09:00 [    42] ERROR      - VideoOS.GatewayService.Controllers.SessionController.Post[95]: Failed to handle 'Post' SessionController System.Exception: MultiUserEnvironment not initialized.
   at VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus()
   at VideoOS.WebRTC.SessionHandler.InitiateSession(Guid deviceId, String token, IEnumerable`1 iceCandidateServers, Nullable`1 streamId, Nullable`1 playbackTime, Nullable`1 skipGaps, Nullable`1 speed, Boolean includeAudio)
   at VideoOS.GatewayService.Controllers.SessionController.Post(String authorization, WebRTCSession value)
2026-03-27 19:40:02.136+09:00 [    42] DEBUG      - VideoOS.WebRTC.SessionHandler.InitiateSession[70]: Initiating session for deviceId: 94bcb387-0e58-47bd-a76a-cbfe2e7abc86 
2026-03-27 19:40:02.136+09:00 [    42] ERROR      - VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus[89]: MultiUserEnvironment has not been initialized. 
2026-03-27 19:40:02.136+09:00 [    42] ERROR      - VideoOS.GatewayService.Controllers.SessionController.Post[95]: Failed to handle 'Post' SessionController System.Exception: MultiUserEnvironment not initialized.
   at VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus()
   at VideoOS.WebRTC.SessionHandler.InitiateSession(Guid deviceId, String token, IEnumerable`1 iceCandidateServers, Nullable`1 streamId, Nullable`1 playbackTime, Nullable`1 skipGaps, Nullable`1 speed, Boolean includeAudio)
   at VideoOS.GatewayService.Controllers.SessionController.Post(String authorization, WebRTCSession value)
2026-03-27 19:40:02.150+09:00 [    42] DEBUG      - VideoOS.WebRTC.SessionHandler.InitiateSession[70]: Initiating session for deviceId: cbabf9bd-fbc2-40c4-83ea-339525035756 
2026-03-27 19:40:02.150+09:00 [    42] ERROR      - VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus[89]: MultiUserEnvironment has not been initialized. 
2026-03-27 19:40:02.150+09:00 [    42] ERROR      - VideoOS.GatewayService.Controllers.SessionController.Post[95]: Failed to handle 'Post' SessionController System.Exception: MultiUserEnvironment not initialized.
   at VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus()
   at VideoOS.WebRTC.SessionHandler.InitiateSession(Guid deviceId, String token, IEnumerable`1 iceCandidateServers, Nullable`1 streamId, Nullable`1 playbackTime, Nullable`1 skipGaps, Nullable`1 speed, Boolean includeAudio)
   at VideoOS.GatewayService.Controllers.SessionController.Post(String authorization, WebRTCSession value)
2026-03-27 19:40:02.164+09:00 [    42] DEBUG      - VideoOS.WebRTC.SessionHandler.InitiateSession[70]: Initiating session for deviceId: f131f2e3-fd8d-457a-8d6d-858418301b1d 
2026-03-27 19:40:02.164+09:00 [    42] ERROR      - VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus[89]: MultiUserEnvironment has not been initialized. 
2026-03-27 19:40:02.164+09:00 [    42] ERROR      - VideoOS.GatewayService.Controllers.SessionController.Post[95]: Failed to handle 'Post' SessionController System.Exception: MultiUserEnvironment not initialized.
   at VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus()
   at VideoOS.WebRTC.SessionHandler.InitiateSession(Guid deviceId, String token, IEnumerable`1 iceCandidateServers, Nullable`1 streamId, Nullable`1 playbackTime, Nullable`1 skipGaps, Nullable`1 speed, Boolean includeAudio)
   at VideoOS.GatewayService.Controllers.SessionController.Post(String authorization, WebRTCSession value)
2026-03-27 19:40:49.259+09:00 [    45] DEBUG      - VideoOS.WebRTC.SessionHandler.InitiateSession[70]: Initiating session for deviceId: f131f2e3-fd8d-457a-8d6d-858418301b1d 
2026-03-27 19:40:49.259+09:00 [    45] ERROR      - VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus[89]: MultiUserEnvironment has not been initialized. 
2026-03-27 19:40:49.259+09:00 [    45] ERROR      - VideoOS.GatewayService.Controllers.SessionController.Post[95]: Failed to handle 'Post' SessionController System.Exception: MultiUserEnvironment not initialized.
   at VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus()
   at VideoOS.WebRTC.SessionHandler.InitiateSession(Guid deviceId, String token, IEnumerable`1 iceCandidateServers, Nullable`1 streamId, Nullable`1 playbackTime, Nullable`1 skipGaps, Nullable`1 speed, Boolean includeAudio)
   at VideoOS.GatewayService.Controllers.SessionController.Post(String authorization, WebRTCSession value)
2026-03-27 19:40:49.270+09:00 [    45] DEBUG      - VideoOS.WebRTC.SessionHandler.InitiateSession[70]: Initiating session for deviceId: cbabf9bd-fbc2-40c4-83ea-339525035756 
2026-03-27 19:40:49.270+09:00 [    45] ERROR      - VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus[89]: MultiUserEnvironment has not been initialized. 
2026-03-27 19:40:49.270+09:00 [    45] ERROR      - VideoOS.GatewayService.Controllers.SessionController.Post[95]: Failed to handle 'Post' SessionController System.Exception: MultiUserEnvironment not initialized.
   at VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus()
   at VideoOS.WebRTC.SessionHandler.InitiateSession(Guid deviceId, String token, IEnumerable`1 iceCandidateServers, Nullable`1 streamId, Nullable`1 playbackTime, Nullable`1 skipGaps, Nullable`1 speed, Boolean includeAudio)
   at VideoOS.GatewayService.Controllers.SessionController.Post(String authorization, WebRTCSession value)
2026-03-27 19:40:49.270+09:00 [    45] DEBUG      - VideoOS.WebRTC.SessionHandler.InitiateSession[70]: Initiating session for deviceId: 144059bb-e458-4c89-bee7-e82b809edc48 
2026-03-27 19:40:49.270+09:00 [    45] ERROR      - VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus[89]: MultiUserEnvironment has not been initialized. 
2026-03-27 19:40:49.270+09:00 [    45] ERROR      - VideoOS.GatewayService.Controllers.SessionController.Post[95]: Failed to handle 'Post' SessionController System.Exception: MultiUserEnvironment not initialized.
   at VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus()
   at VideoOS.WebRTC.SessionHandler.InitiateSession(Guid deviceId, String token, IEnumerable`1 iceCandidateServers, Nullable`1 streamId, Nullable`1 playbackTime, Nullable`1 skipGaps, Nullable`1 speed, Boolean includeAudio)
   at VideoOS.GatewayService.Controllers.SessionController.Post(String authorization, WebRTCSession value)
2026-03-27 19:40:49.291+09:00 [    45] DEBUG      - VideoOS.WebRTC.SessionHandler.InitiateSession[70]: Initiating session for deviceId: 94bcb387-0e58-47bd-a76a-cbfe2e7abc86 
2026-03-27 19:40:49.291+09:00 [    45] ERROR      - VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus[89]: MultiUserEnvironment has not been initialized. 
2026-03-27 19:40:49.291+09:00 [    45] ERROR      - VideoOS.GatewayService.Controllers.SessionController.Post[95]: Failed to handle 'Post' SessionController System.Exception: MultiUserEnvironment not initialized.
   at VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus()
   at VideoOS.WebRTC.SessionHandler.InitiateSession(Guid deviceId, String token, IEnumerable`1 iceCandidateServers, Nullable`1 streamId, Nullable`1 playbackTime, Nullable`1 skipGaps, Nullable`1 speed, Boolean includeAudio)
   at VideoOS.GatewayService.Controllers.SessionController.Post(String authorization, WebRTCSession value)
2026-03-27 19:40:49.302+09:00 [    45] DEBUG      - VideoOS.WebRTC.SessionHandler.InitiateSession[70]: Initiating session for deviceId: efa10b58-883c-4f2d-8d67-314b88a101e8 
2026-03-27 19:40:49.302+09:00 [    45] ERROR      - VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus[89]: MultiUserEnvironment has not been initialized. 
2026-03-27 19:40:49.302+09:00 [    45] ERROR      - VideoOS.GatewayService.Controllers.SessionController.Post[95]: Failed to handle 'Post' SessionController System.Exception: MultiUserEnvironment not initialized.
   at VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus()
   at VideoOS.WebRTC.SessionHandler.InitiateSession(Guid deviceId, String token, IEnumerable`1 iceCandidateServers, Nullable`1 streamId, Nullable`1 playbackTime, Nullable`1 skipGaps, Nullable`1 speed, Boolean includeAudio)
   at VideoOS.GatewayService.Controllers.SessionController.Post(String authorization, WebRTCSession value)
2026-03-27 19:41:00.738+09:00 [    37] DEBUG      - VideoOS.WebRTC.SessionHandler.InitiateSession[70]: Initiating session for deviceId: 144059bb-e458-4c89-bee7-e82b809edc48 
2026-03-27 19:41:00.738+09:00 [    37] ERROR      - VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus[89]: MultiUserEnvironment has not been initialized. 
2026-03-27 19:41:00.738+09:00 [    37] ERROR      - VideoOS.GatewayService.Controllers.SessionController.Post[95]: Failed to handle 'Post' SessionController System.Exception: MultiUserEnvironment not initialized.
   at VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus()
   at VideoOS.WebRTC.SessionHandler.InitiateSession(Guid deviceId, String token, IEnumerable`1 iceCandidateServers, Nullable`1 streamId, Nullable`1 playbackTime, Nullable`1 skipGaps, Nullable`1 speed, Boolean includeAudio)
   at VideoOS.GatewayService.Controllers.SessionController.Post(String authorization, WebRTCSession value)
2026-03-27 19:41:00.754+09:00 [    37] DEBUG      - VideoOS.WebRTC.SessionHandler.InitiateSession[70]: Initiating session for deviceId: efa10b58-883c-4f2d-8d67-314b88a101e8 
2026-03-27 19:41:00.754+09:00 [    37] ERROR      - VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus[89]: MultiUserEnvironment has not been initialized. 
2026-03-27 19:41:00.754+09:00 [    37] ERROR      - VideoOS.GatewayService.Controllers.SessionController.Post[95]: Failed to handle 'Post' SessionController System.Exception: MultiUserEnvironment not initialized.
   at VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus()
   at VideoOS.WebRTC.SessionHandler.InitiateSession(Guid deviceId, String token, IEnumerable`1 iceCandidateServers, Nullable`1 streamId, Nullable`1 playbackTime, Nullable`1 skipGaps, Nullable`1 speed, Boolean includeAudio)
   at VideoOS.GatewayService.Controllers.SessionController.Post(String authorization, WebRTCSession value)
2026-03-27 19:41:00.771+09:00 [    37] DEBUG      - VideoOS.WebRTC.SessionHandler.InitiateSession[70]: Initiating session for deviceId: 94bcb387-0e58-47bd-a76a-cbfe2e7abc86 
2026-03-27 19:41:00.771+09:00 [    37] ERROR      - VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus[89]: MultiUserEnvironment has not been initialized. 
2026-03-27 19:41:00.771+09:00 [    37] ERROR      - VideoOS.GatewayService.Controllers.SessionController.Post[95]: Failed to handle 'Post' SessionController System.Exception: MultiUserEnvironment not initialized.
   at VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus()
   at VideoOS.WebRTC.SessionHandler.InitiateSession(Guid deviceId, String token, IEnumerable`1 iceCandidateServers, Nullable`1 streamId, Nullable`1 playbackTime, Nullable`1 skipGaps, Nullable`1 speed, Boolean includeAudio)
   at VideoOS.GatewayService.Controllers.SessionController.Post(String authorization, WebRTCSession value)
2026-03-27 19:41:00.787+09:00 [    37] DEBUG      - VideoOS.WebRTC.SessionHandler.InitiateSession[70]: Initiating session for deviceId: cbabf9bd-fbc2-40c4-83ea-339525035756 
2026-03-27 19:41:00.787+09:00 [    37] ERROR      - VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus[89]: MultiUserEnvironment has not been initialized. 
2026-03-27 19:41:00.787+09:00 [    37] ERROR      - VideoOS.GatewayService.Controllers.SessionController.Post[95]: Failed to handle 'Post' SessionController System.Exception: MultiUserEnvironment not initialized.
   at VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus()
   at VideoOS.WebRTC.SessionHandler.InitiateSession(Guid deviceId, String token, IEnumerable`1 iceCandidateServers, Nullable`1 streamId, Nullable`1 playbackTime, Nullable`1 skipGaps, Nullable`1 speed, Boolean includeAudio)
   at VideoOS.GatewayService.Controllers.SessionController.Post(String authorization, WebRTCSession value)
2026-03-27 19:41:00.806+09:00 [    37] DEBUG      - VideoOS.WebRTC.SessionHandler.InitiateSession[70]: Initiating session for deviceId: f131f2e3-fd8d-457a-8d6d-858418301b1d 
2026-03-27 19:41:00.806+09:00 [    37] ERROR      - VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus[89]: MultiUserEnvironment has not been initialized. 
2026-03-27 19:41:00.806+09:00 [    37] ERROR      - VideoOS.GatewayService.Controllers.SessionController.Post[95]: Failed to handle 'Post' SessionController System.Exception: MultiUserEnvironment not initialized.
   at VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus()
   at VideoOS.WebRTC.SessionHandler.InitiateSession(Guid deviceId, String token, IEnumerable`1 iceCandidateServers, Nullable`1 streamId, Nullable`1 playbackTime, Nullable`1 skipGaps, Nullable`1 speed, Boolean includeAudio)
   at VideoOS.GatewayService.Controllers.SessionController.Post(String authorization, WebRTCSession value)
2026-03-27 19:41:49.231+09:00 [    48] DEBUG      - VideoOS.WebRTC.SessionHandler.InitiateSession[70]: Initiating session for deviceId: 144059bb-e458-4c89-bee7-e82b809edc48 
2026-03-27 19:41:49.231+09:00 [    48] ERROR      - VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus[89]: MultiUserEnvironment has not been initialized. 
2026-03-27 19:41:49.231+09:00 [    48] ERROR      - VideoOS.GatewayService.Controllers.SessionController.Post[95]: Failed to handle 'Post' SessionController System.Exception: MultiUserEnvironment not initialized.
   at VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus()
   at VideoOS.WebRTC.SessionHandler.InitiateSession(Guid deviceId, String token, IEnumerable`1 iceCandidateServers, Nullable`1 streamId, Nullable`1 playbackTime, Nullable`1 skipGaps, Nullable`1 speed, Boolean includeAudio)
   at VideoOS.GatewayService.Controllers.SessionController.Post(String authorization, WebRTCSession value)
2026-03-27 19:41:49.243+09:00 [    48] DEBUG      - VideoOS.WebRTC.SessionHandler.InitiateSession[70]: Initiating session for deviceId: 94bcb387-0e58-47bd-a76a-cbfe2e7abc86 
2026-03-27 19:41:49.243+09:00 [    48] ERROR      - VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus[89]: MultiUserEnvironment has not been initialized. 
2026-03-27 19:41:49.243+09:00 [    48] ERROR      - VideoOS.GatewayService.Controllers.SessionController.Post[95]: Failed to handle 'Post' SessionController System.Exception: MultiUserEnvironment not initialized.
   at VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus()
   at VideoOS.WebRTC.SessionHandler.InitiateSession(Guid deviceId, String token, IEnumerable`1 iceCandidateServers, Nullable`1 streamId, Nullable`1 playbackTime, Nullable`1 skipGaps, Nullable`1 speed, Boolean includeAudio)
   at VideoOS.GatewayService.Controllers.SessionController.Post(String authorization, WebRTCSession value)
2026-03-27 19:41:49.254+09:00 [    48] DEBUG      - VideoOS.WebRTC.SessionHandler.InitiateSession[70]: Initiating session for deviceId: cbabf9bd-fbc2-40c4-83ea-339525035756 
2026-03-27 19:41:49.254+09:00 [    48] ERROR      - VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus[89]: MultiUserEnvironment has not been initialized. 
2026-03-27 19:41:49.254+09:00 [    48] ERROR      - VideoOS.GatewayService.Controllers.SessionController.Post[95]: Failed to handle 'Post' SessionController System.Exception: MultiUserEnvironment not initialized.
   at VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus()
   at VideoOS.WebRTC.SessionHandler.InitiateSession(Guid deviceId, String token, IEnumerable`1 iceCandidateServers, Nullable`1 streamId, Nullable`1 playbackTime, Nullable`1 skipGaps, Nullable`1 speed, Boolean includeAudio)
   at VideoOS.GatewayService.Controllers.SessionController.Post(String authorization, WebRTCSession value)
2026-03-27 19:41:49.254+09:00 [    48] DEBUG      - VideoOS.WebRTC.SessionHandler.InitiateSession[70]: Initiating session for deviceId: efa10b58-883c-4f2d-8d67-314b88a101e8 
2026-03-27 19:41:49.254+09:00 [    48] ERROR      - VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus[89]: MultiUserEnvironment has not been initialized. 
2026-03-27 19:41:49.254+09:00 [    48] ERROR      - VideoOS.GatewayService.Controllers.SessionController.Post[95]: Failed to handle 'Post' SessionController System.Exception: MultiUserEnvironment not initialized.
   at VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus()
   at VideoOS.WebRTC.SessionHandler.InitiateSession(Guid deviceId, String token, IEnumerable`1 iceCandidateServers, Nullable`1 streamId, Nullable`1 playbackTime, Nullable`1 skipGaps, Nullable`1 speed, Boolean includeAudio)
   at VideoOS.GatewayService.Controllers.SessionController.Post(String authorization, WebRTCSession value)
2026-03-27 19:41:49.275+09:00 [    48] DEBUG      - VideoOS.WebRTC.SessionHandler.InitiateSession[70]: Initiating session for deviceId: f131f2e3-fd8d-457a-8d6d-858418301b1d 
2026-03-27 19:41:49.275+09:00 [    48] ERROR      - VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus[89]: MultiUserEnvironment has not been initialized. 
2026-03-27 19:41:49.275+09:00 [    48] ERROR      - VideoOS.GatewayService.Controllers.SessionController.Post[95]: Failed to handle 'Post' SessionController System.Exception: MultiUserEnvironment not initialized.
   at VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus()
   at VideoOS.WebRTC.SessionHandler.InitiateSession(Guid deviceId, String token, IEnumerable`1 iceCandidateServers, Nullable`1 streamId, Nullable`1 playbackTime, Nullable`1 skipGaps, Nullable`1 speed, Boolean includeAudio)
   at VideoOS.GatewayService.Controllers.SessionController.Post(String authorization, WebRTCSession value)
2026-03-27 19:42:15.857+09:00 [    45] DEBUG      - VideoOS.WebRTC.SessionHandler.InitiateSession[70]: Initiating session for deviceId: efa10b58-883c-4f2d-8d67-314b88a101e8 
2026-03-27 19:42:15.857+09:00 [    45] ERROR      - VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus[89]: MultiUserEnvironment has not been initialized. 
2026-03-27 19:42:15.857+09:00 [    45] ERROR      - VideoOS.GatewayService.Controllers.SessionController.Post[95]: Failed to handle 'Post' SessionController System.Exception: MultiUserEnvironment not initialized.
   at VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus()
   at VideoOS.WebRTC.SessionHandler.InitiateSession(Guid deviceId, String token, IEnumerable`1 iceCandidateServers, Nullable`1 streamId, Nullable`1 playbackTime, Nullable`1 skipGaps, Nullable`1 speed, Boolean includeAudio)
   at VideoOS.GatewayService.Controllers.SessionController.Post(String authorization, WebRTCSession value)
2026-03-27 19:42:15.868+09:00 [    45] DEBUG      - VideoOS.WebRTC.SessionHandler.InitiateSession[70]: Initiating session for deviceId: cbabf9bd-fbc2-40c4-83ea-339525035756 
2026-03-27 19:42:15.868+09:00 [    45] ERROR      - VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus[89]: MultiUserEnvironment has not been initialized. 
2026-03-27 19:42:15.868+09:00 [    45] ERROR      - VideoOS.GatewayService.Controllers.SessionController.Post[95]: Failed to handle 'Post' SessionController System.Exception: MultiUserEnvironment not initialized.
   at VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus()
   at VideoOS.WebRTC.SessionHandler.InitiateSession(Guid deviceId, String token, IEnumerable`1 iceCandidateServers, Nullable`1 streamId, Nullable`1 playbackTime, Nullable`1 skipGaps, Nullable`1 speed, Boolean includeAudio)
   at VideoOS.GatewayService.Controllers.SessionController.Post(String authorization, WebRTCSession value)
2026-03-27 19:42:15.879+09:00 [    45] DEBUG      - VideoOS.WebRTC.SessionHandler.InitiateSession[70]: Initiating session for deviceId: f131f2e3-fd8d-457a-8d6d-858418301b1d 
2026-03-27 19:42:15.879+09:00 [    45] ERROR      - VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus[89]: MultiUserEnvironment has not been initialized. 
2026-03-27 19:42:15.879+09:00 [    45] ERROR      - VideoOS.GatewayService.Controllers.SessionController.Post[95]: Failed to handle 'Post' SessionController System.Exception: MultiUserEnvironment not initialized.
   at VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus()
   at VideoOS.WebRTC.SessionHandler.InitiateSession(Guid deviceId, String token, IEnumerable`1 iceCandidateServers, Nullable`1 streamId, Nullable`1 playbackTime, Nullable`1 skipGaps, Nullable`1 speed, Boolean includeAudio)
   at VideoOS.GatewayService.Controllers.SessionController.Post(String authorization, WebRTCSession value)
2026-03-27 19:42:15.879+09:00 [    45] DEBUG      - VideoOS.WebRTC.SessionHandler.InitiateSession[70]: Initiating session for deviceId: 144059bb-e458-4c89-bee7-e82b809edc48 
2026-03-27 19:42:15.879+09:00 [    45] ERROR      - VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus[89]: MultiUserEnvironment has not been initialized. 
2026-03-27 19:42:15.879+09:00 [    45] ERROR      - VideoOS.GatewayService.Controllers.SessionController.Post[95]: Failed to handle 'Post' SessionController System.Exception: MultiUserEnvironment not initialized.
   at VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus()
   at VideoOS.WebRTC.SessionHandler.InitiateSession(Guid deviceId, String token, IEnumerable`1 iceCandidateServers, Nullable`1 streamId, Nullable`1 playbackTime, Nullable`1 skipGaps, Nullable`1 speed, Boolean includeAudio)
   at VideoOS.GatewayService.Controllers.SessionController.Post(String authorization, WebRTCSession value)
2026-03-27 19:42:15.901+09:00 [    45] DEBUG      - VideoOS.WebRTC.SessionHandler.InitiateSession[70]: Initiating session for deviceId: 94bcb387-0e58-47bd-a76a-cbfe2e7abc86 
2026-03-27 19:42:15.901+09:00 [    45] ERROR      - VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus[89]: MultiUserEnvironment has not been initialized. 
2026-03-27 19:42:15.901+09:00 [    45] ERROR      - VideoOS.GatewayService.Controllers.SessionController.Post[95]: Failed to handle 'Post' SessionController System.Exception: MultiUserEnvironment not initialized.
   at VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus()
   at VideoOS.WebRTC.SessionHandler.InitiateSession(Guid deviceId, String token, IEnumerable`1 iceCandidateServers, Nullable`1 streamId, Nullable`1 playbackTime, Nullable`1 skipGaps, Nullable`1 speed, Boolean includeAudio)
   at VideoOS.GatewayService.Controllers.SessionController.Post(String authorization, WebRTCSession value)
2026-03-27 19:42:21.039+09:00 [    50] DEBUG      - VideoOS.WebRTC.SessionHandler.InitiateSession[70]: Initiating session for deviceId: f131f2e3-fd8d-457a-8d6d-858418301b1d 
2026-03-27 19:42:21.039+09:00 [    50] ERROR      - VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus[89]: MultiUserEnvironment has not been initialized. 
2026-03-27 19:42:21.039+09:00 [    50] ERROR      - VideoOS.GatewayService.Controllers.SessionController.Post[95]: Failed to handle 'Post' SessionController System.Exception: MultiUserEnvironment not initialized.
   at VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus()
   at VideoOS.WebRTC.SessionHandler.InitiateSession(Guid deviceId, String token, IEnumerable`1 iceCandidateServers, Nullable`1 streamId, Nullable`1 playbackTime, Nullable`1 skipGaps, Nullable`1 speed, Boolean includeAudio)
   at VideoOS.GatewayService.Controllers.SessionController.Post(String authorization, WebRTCSession value)
2026-03-27 19:42:21.050+09:00 [    50] DEBUG      - VideoOS.WebRTC.SessionHandler.InitiateSession[70]: Initiating session for deviceId: 144059bb-e458-4c89-bee7-e82b809edc48 
2026-03-27 19:42:21.050+09:00 [    50] ERROR      - VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus[89]: MultiUserEnvironment has not been initialized. 
2026-03-27 19:42:21.050+09:00 [    50] ERROR      - VideoOS.GatewayService.Controllers.SessionController.Post[95]: Failed to handle 'Post' SessionController System.Exception: MultiUserEnvironment not initialized.
   at VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus()
   at VideoOS.WebRTC.SessionHandler.InitiateSession(Guid deviceId, String token, IEnumerable`1 iceCandidateServers, Nullable`1 streamId, Nullable`1 playbackTime, Nullable`1 skipGaps, Nullable`1 speed, Boolean includeAudio)
   at VideoOS.GatewayService.Controllers.SessionController.Post(String authorization, WebRTCSession value)
2026-03-27 19:42:21.050+09:00 [    50] DEBUG      - VideoOS.WebRTC.SessionHandler.InitiateSession[70]: Initiating session for deviceId: cbabf9bd-fbc2-40c4-83ea-339525035756 
2026-03-27 19:42:21.050+09:00 [    50] ERROR      - VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus[89]: MultiUserEnvironment has not been initialized. 
2026-03-27 19:42:21.050+09:00 [    50] ERROR      - VideoOS.GatewayService.Controllers.SessionController.Post[95]: Failed to handle 'Post' SessionController System.Exception: MultiUserEnvironment not initialized.
   at VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus()
   at VideoOS.WebRTC.SessionHandler.InitiateSession(Guid deviceId, String token, IEnumerable`1 iceCandidateServers, Nullable`1 streamId, Nullable`1 playbackTime, Nullable`1 skipGaps, Nullable`1 speed, Boolean includeAudio)
   at VideoOS.GatewayService.Controllers.SessionController.Post(String authorization, WebRTCSession value)
2026-03-27 19:42:21.073+09:00 [    50] DEBUG      - VideoOS.WebRTC.SessionHandler.InitiateSession[70]: Initiating session for deviceId: efa10b58-883c-4f2d-8d67-314b88a101e8 
2026-03-27 19:42:21.073+09:00 [    50] ERROR      - VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus[89]: MultiUserEnvironment has not been initialized. 
2026-03-27 19:42:21.073+09:00 [    50] ERROR      - VideoOS.GatewayService.Controllers.SessionController.Post[95]: Failed to handle 'Post' SessionController System.Exception: MultiUserEnvironment not initialized.
   at VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus()
   at VideoOS.WebRTC.SessionHandler.InitiateSession(Guid deviceId, String token, IEnumerable`1 iceCandidateServers, Nullable`1 streamId, Nullable`1 playbackTime, Nullable`1 skipGaps, Nullable`1 speed, Boolean includeAudio)
   at VideoOS.GatewayService.Controllers.SessionController.Post(String authorization, WebRTCSession value)
2026-03-27 19:42:21.083+09:00 [    50] DEBUG      - VideoOS.WebRTC.SessionHandler.InitiateSession[70]: Initiating session for deviceId: 94bcb387-0e58-47bd-a76a-cbfe2e7abc86 
2026-03-27 19:42:21.083+09:00 [    50] ERROR      - VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus[89]: MultiUserEnvironment has not been initialized. 
2026-03-27 19:42:21.083+09:00 [    50] ERROR      - VideoOS.GatewayService.Controllers.SessionController.Post[95]: Failed to handle 'Post' SessionController System.Exception: MultiUserEnvironment not initialized.
   at VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus()
   at VideoOS.WebRTC.SessionHandler.InitiateSession(Guid deviceId, String token, IEnumerable`1 iceCandidateServers, Nullable`1 streamId, Nullable`1 playbackTime, Nullable`1 skipGaps, Nullable`1 speed, Boolean includeAudio)
   at VideoOS.GatewayService.Controllers.SessionController.Post(String authorization, WebRTCSession value)
2026-03-27 19:42:24.709+09:00 [    50] DEBUG      - VideoOS.WebRTC.SessionHandler.InitiateSession[70]: Initiating session for deviceId: f131f2e3-fd8d-457a-8d6d-858418301b1d 
2026-03-27 19:42:24.709+09:00 [    50] ERROR      - VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus[89]: MultiUserEnvironment has not been initialized. 
2026-03-27 19:42:24.709+09:00 [    50] ERROR      - VideoOS.GatewayService.Controllers.SessionController.Post[95]: Failed to handle 'Post' SessionController System.Exception: MultiUserEnvironment not initialized.
   at VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus()
   at VideoOS.WebRTC.SessionHandler.InitiateSession(Guid deviceId, String token, IEnumerable`1 iceCandidateServers, Nullable`1 streamId, Nullable`1 playbackTime, Nullable`1 skipGaps, Nullable`1 speed, Boolean includeAudio)
   at VideoOS.GatewayService.Controllers.SessionController.Post(String authorization, WebRTCSession value)
2026-03-27 19:42:24.709+09:00 [    50] DEBUG      - VideoOS.WebRTC.SessionHandler.InitiateSession[70]: Initiating session for deviceId: cbabf9bd-fbc2-40c4-83ea-339525035756 
2026-03-27 19:42:24.709+09:00 [    50] ERROR      - VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus[89]: MultiUserEnvironment has not been initialized. 
2026-03-27 19:42:24.709+09:00 [    50] ERROR      - VideoOS.GatewayService.Controllers.SessionController.Post[95]: Failed to handle 'Post' SessionController System.Exception: MultiUserEnvironment not initialized.
   at VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus()
   at VideoOS.WebRTC.SessionHandler.InitiateSession(Guid deviceId, String token, IEnumerable`1 iceCandidateServers, Nullable`1 streamId, Nullable`1 playbackTime, Nullable`1 skipGaps, Nullable`1 speed, Boolean includeAudio)
   at VideoOS.GatewayService.Controllers.SessionController.Post(String authorization, WebRTCSession value)
2026-03-27 19:42:24.731+09:00 [    50] DEBUG      - VideoOS.WebRTC.SessionHandler.InitiateSession[70]: Initiating session for deviceId: efa10b58-883c-4f2d-8d67-314b88a101e8 
2026-03-27 19:42:24.731+09:00 [    50] ERROR      - VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus[89]: MultiUserEnvironment has not been initialized. 
2026-03-27 19:42:24.731+09:00 [    50] ERROR      - VideoOS.GatewayService.Controllers.SessionController.Post[95]: Failed to handle 'Post' SessionController System.Exception: MultiUserEnvironment not initialized.
   at VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus()
   at VideoOS.WebRTC.SessionHandler.InitiateSession(Guid deviceId, String token, IEnumerable`1 iceCandidateServers, Nullable`1 streamId, Nullable`1 playbackTime, Nullable`1 skipGaps, Nullable`1 speed, Boolean includeAudio)
   at VideoOS.GatewayService.Controllers.SessionController.Post(String authorization, WebRTCSession value)
2026-03-27 19:42:24.746+09:00 [    50] DEBUG      - VideoOS.WebRTC.SessionHandler.InitiateSession[70]: Initiating session for deviceId: 94bcb387-0e58-47bd-a76a-cbfe2e7abc86 
2026-03-27 19:42:24.746+09:00 [    50] ERROR      - VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus[89]: MultiUserEnvironment has not been initialized. 
2026-03-27 19:42:24.746+09:00 [    50] ERROR      - VideoOS.GatewayService.Controllers.SessionController.Post[95]: Failed to handle 'Post' SessionController System.Exception: MultiUserEnvironment not initialized.
   at VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus()
   at VideoOS.WebRTC.SessionHandler.InitiateSession(Guid deviceId, String token, IEnumerable`1 iceCandidateServers, Nullable`1 streamId, Nullable`1 playbackTime, Nullable`1 skipGaps, Nullable`1 speed, Boolean includeAudio)
   at VideoOS.GatewayService.Controllers.SessionController.Post(String authorization, WebRTCSession value)
2026-03-27 19:42:24.756+09:00 [    50] DEBUG      - VideoOS.WebRTC.SessionHandler.InitiateSession[70]: Initiating session for deviceId: 144059bb-e458-4c89-bee7-e82b809edc48 
2026-03-27 19:42:24.756+09:00 [    50] ERROR      - VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus[89]: MultiUserEnvironment has not been initialized. 
2026-03-27 19:42:24.756+09:00 [    50] ERROR      - VideoOS.GatewayService.Controllers.SessionController.Post[95]: Failed to handle 'Post' SessionController System.Exception: MultiUserEnvironment not initialized.
   at VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus()
   at VideoOS.WebRTC.SessionHandler.InitiateSession(Guid deviceId, String token, IEnumerable`1 iceCandidateServers, Nullable`1 streamId, Nullable`1 playbackTime, Nullable`1 skipGaps, Nullable`1 speed, Boolean includeAudio)
   at VideoOS.GatewayService.Controllers.SessionController.Post(String authorization, WebRTCSession value)
2026-03-27 19:44:42.841+09:00 [    49] DEBUG      - VideoOS.WebRTC.SessionHandler.InitiateSession[70]: Initiating session for deviceId: cbabf9bd-fbc2-40c4-83ea-339525035756 
2026-03-27 19:44:42.841+09:00 [    49] ERROR      - VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus[89]: MultiUserEnvironment has not been initialized. 
2026-03-27 19:44:42.841+09:00 [    49] ERROR      - VideoOS.GatewayService.Controllers.SessionController.Post[95]: Failed to handle 'Post' SessionController System.Exception: MultiUserEnvironment not initialized.
   at VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus()
   at VideoOS.WebRTC.SessionHandler.InitiateSession(Guid deviceId, String token, IEnumerable`1 iceCandidateServers, Nullable`1 streamId, Nullable`1 playbackTime, Nullable`1 skipGaps, Nullable`1 speed, Boolean includeAudio)
   at VideoOS.GatewayService.Controllers.SessionController.Post(String authorization, WebRTCSession value)
2026-03-27 19:44:42.853+09:00 [    49] DEBUG      - VideoOS.WebRTC.SessionHandler.InitiateSession[70]: Initiating session for deviceId: f131f2e3-fd8d-457a-8d6d-858418301b1d 
2026-03-27 19:44:42.853+09:00 [    49] ERROR      - VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus[89]: MultiUserEnvironment has not been initialized. 
2026-03-27 19:44:42.853+09:00 [    49] ERROR      - VideoOS.GatewayService.Controllers.SessionController.Post[95]: Failed to handle 'Post' SessionController System.Exception: MultiUserEnvironment not initialized.
   at VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus()
   at VideoOS.WebRTC.SessionHandler.InitiateSession(Guid deviceId, String token, IEnumerable`1 iceCandidateServers, Nullable`1 streamId, Nullable`1 playbackTime, Nullable`1 skipGaps, Nullable`1 speed, Boolean includeAudio)
   at VideoOS.GatewayService.Controllers.SessionController.Post(String authorization, WebRTCSession value)
2026-03-27 19:44:42.864+09:00 [    49] DEBUG      - VideoOS.WebRTC.SessionHandler.InitiateSession[70]: Initiating session for deviceId: 94bcb387-0e58-47bd-a76a-cbfe2e7abc86 
2026-03-27 19:44:42.864+09:00 [    49] ERROR      - VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus[89]: MultiUserEnvironment has not been initialized. 
2026-03-27 19:44:42.864+09:00 [    49] ERROR      - VideoOS.GatewayService.Controllers.SessionController.Post[95]: Failed to handle 'Post' SessionController System.Exception: MultiUserEnvironment not initialized.
   at VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus()
   at VideoOS.WebRTC.SessionHandler.InitiateSession(Guid deviceId, String token, IEnumerable`1 iceCandidateServers, Nullable`1 streamId, Nullable`1 playbackTime, Nullable`1 skipGaps, Nullable`1 speed, Boolean includeAudio)
   at VideoOS.GatewayService.Controllers.SessionController.Post(String authorization, WebRTCSession value)
2026-03-27 19:44:42.864+09:00 [    49] DEBUG      - VideoOS.WebRTC.SessionHandler.InitiateSession[70]: Initiating session for deviceId: efa10b58-883c-4f2d-8d67-314b88a101e8 
2026-03-27 19:44:42.864+09:00 [    49] ERROR      - VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus[89]: MultiUserEnvironment has not been initialized. 
2026-03-27 19:44:42.864+09:00 [    49] ERROR      - VideoOS.GatewayService.Controllers.SessionController.Post[95]: Failed to handle 'Post' SessionController System.Exception: MultiUserEnvironment not initialized.
   at VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus()
   at VideoOS.WebRTC.SessionHandler.InitiateSession(Guid deviceId, String token, IEnumerable`1 iceCandidateServers, Nullable`1 streamId, Nullable`1 playbackTime, Nullable`1 skipGaps, Nullable`1 speed, Boolean includeAudio)
   at VideoOS.GatewayService.Controllers.SessionController.Post(String authorization, WebRTCSession value)
2026-03-27 19:44:42.885+09:00 [    49] DEBUG      - VideoOS.WebRTC.SessionHandler.InitiateSession[70]: Initiating session for deviceId: 144059bb-e458-4c89-bee7-e82b809edc48 
2026-03-27 19:44:42.885+09:00 [    49] ERROR      - VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus[89]: MultiUserEnvironment has not been initialized. 
2026-03-27 19:44:42.885+09:00 [    49] ERROR      - VideoOS.GatewayService.Controllers.SessionController.Post[95]: Failed to handle 'Post' SessionController System.Exception: MultiUserEnvironment not initialized.
   at VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus()
   at VideoOS.WebRTC.SessionHandler.InitiateSession(Guid deviceId, String token, IEnumerable`1 iceCandidateServers, Nullable`1 streamId, Nullable`1 playbackTime, Nullable`1 skipGaps, Nullable`1 speed, Boolean includeAudio)
   at VideoOS.GatewayService.Controllers.SessionController.Post(String authorization, WebRTCSession value)
2026-03-27 19:44:50.170+09:00 [    52] DEBUG      - VideoOS.WebRTC.SessionHandler.InitiateSession[70]: Initiating session for deviceId: efa10b58-883c-4f2d-8d67-314b88a101e8 
2026-03-27 19:44:50.170+09:00 [    52] ERROR      - VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus[89]: MultiUserEnvironment has not been initialized. 
2026-03-27 19:44:50.170+09:00 [    52] ERROR      - VideoOS.GatewayService.Controllers.SessionController.Post[95]: Failed to handle 'Post' SessionController System.Exception: MultiUserEnvironment not initialized.
   at VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus()
   at VideoOS.WebRTC.SessionHandler.InitiateSession(Guid deviceId, String token, IEnumerable`1 iceCandidateServers, Nullable`1 streamId, Nullable`1 playbackTime, Nullable`1 skipGaps, Nullable`1 speed, Boolean includeAudio)
   at VideoOS.GatewayService.Controllers.SessionController.Post(String authorization, WebRTCSession value)
2026-03-27 19:44:50.181+09:00 [    52] DEBUG      - VideoOS.WebRTC.SessionHandler.InitiateSession[70]: Initiating session for deviceId: f131f2e3-fd8d-457a-8d6d-858418301b1d 
2026-03-27 19:44:50.181+09:00 [    52] ERROR      - VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus[89]: MultiUserEnvironment has not been initialized. 
2026-03-27 19:44:50.181+09:00 [    52] ERROR      - VideoOS.GatewayService.Controllers.SessionController.Post[95]: Failed to handle 'Post' SessionController System.Exception: MultiUserEnvironment not initialized.
   at VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus()
   at VideoOS.WebRTC.SessionHandler.InitiateSession(Guid deviceId, String token, IEnumerable`1 iceCandidateServers, Nullable`1 streamId, Nullable`1 playbackTime, Nullable`1 skipGaps, Nullable`1 speed, Boolean includeAudio)
   at VideoOS.GatewayService.Controllers.SessionController.Post(String authorization, WebRTCSession value)
2026-03-27 19:44:50.196+09:00 [    52] DEBUG      - VideoOS.WebRTC.SessionHandler.InitiateSession[70]: Initiating session for deviceId: 94bcb387-0e58-47bd-a76a-cbfe2e7abc86 
2026-03-27 19:44:50.196+09:00 [    52] ERROR      - VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus[89]: MultiUserEnvironment has not been initialized. 
2026-03-27 19:44:50.196+09:00 [    52] ERROR      - VideoOS.GatewayService.Controllers.SessionController.Post[95]: Failed to handle 'Post' SessionController System.Exception: MultiUserEnvironment not initialized.
   at VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus()
   at VideoOS.WebRTC.SessionHandler.InitiateSession(Guid deviceId, String token, IEnumerable`1 iceCandidateServers, Nullable`1 streamId, Nullable`1 playbackTime, Nullable`1 skipGaps, Nullable`1 speed, Boolean includeAudio)
   at VideoOS.GatewayService.Controllers.SessionController.Post(String authorization, WebRTCSession value)
2026-03-27 19:44:50.208+09:00 [    52] DEBUG      - VideoOS.WebRTC.SessionHandler.InitiateSession[70]: Initiating session for deviceId: 144059bb-e458-4c89-bee7-e82b809edc48 
2026-03-27 19:44:50.208+09:00 [    52] ERROR      - VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus[89]: MultiUserEnvironment has not been initialized. 
2026-03-27 19:44:50.208+09:00 [    52] ERROR      - VideoOS.GatewayService.Controllers.SessionController.Post[95]: Failed to handle 'Post' SessionController System.Exception: MultiUserEnvironment not initialized.
   at VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus()
   at VideoOS.WebRTC.SessionHandler.InitiateSession(Guid deviceId, String token, IEnumerable`1 iceCandidateServers, Nullable`1 streamId, Nullable`1 playbackTime, Nullable`1 skipGaps, Nullable`1 speed, Boolean includeAudio)
   at VideoOS.GatewayService.Controllers.SessionController.Post(String authorization, WebRTCSession value)
2026-03-27 19:44:50.208+09:00 [    52] DEBUG      - VideoOS.WebRTC.SessionHandler.InitiateSession[70]: Initiating session for deviceId: cbabf9bd-fbc2-40c4-83ea-339525035756 
2026-03-27 19:44:50.208+09:00 [    52] ERROR      - VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus[89]: MultiUserEnvironment has not been initialized. 
2026-03-27 19:44:50.223+09:00 [    52] ERROR      - VideoOS.GatewayService.Controllers.SessionController.Post[95]: Failed to handle 'Post' SessionController System.Exception: MultiUserEnvironment not initialized.
   at VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus()
   at VideoOS.WebRTC.SessionHandler.InitiateSession(Guid deviceId, String token, IEnumerable`1 iceCandidateServers, Nullable`1 streamId, Nullable`1 playbackTime, Nullable`1 skipGaps, Nullable`1 speed, Boolean includeAudio)
   at VideoOS.GatewayService.Controllers.SessionController.Post(String authorization, WebRTCSession value)
2026-03-27 19:45:15.283+09:00 [    42] DEBUG      - VideoOS.WebRTC.SessionHandler.InitiateSession[70]: Initiating session for deviceId: f131f2e3-fd8d-457a-8d6d-858418301b1d 
2026-03-27 19:45:15.283+09:00 [    42] ERROR      - VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus[89]: MultiUserEnvironment has not been initialized. 
2026-03-27 19:45:15.283+09:00 [    42] ERROR      - VideoOS.GatewayService.Controllers.SessionController.Post[95]: Failed to handle 'Post' SessionController System.Exception: MultiUserEnvironment not initialized.
   at VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus()
   at VideoOS.WebRTC.SessionHandler.InitiateSession(Guid deviceId, String token, IEnumerable`1 iceCandidateServers, Nullable`1 streamId, Nullable`1 playbackTime, Nullable`1 skipGaps, Nullable`1 speed, Boolean includeAudio)
   at VideoOS.GatewayService.Controllers.SessionController.Post(String authorization, WebRTCSession value)
2026-03-27 19:45:18.931+09:00 [    42] DEBUG      - VideoOS.WebRTC.SessionHandler.InitiateSession[70]: Initiating session for deviceId: 94bcb387-0e58-47bd-a76a-cbfe2e7abc86 
2026-03-27 19:45:18.931+09:00 [    42] ERROR      - VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus[89]: MultiUserEnvironment has not been initialized. 
2026-03-27 19:45:18.931+09:00 [    42] ERROR      - VideoOS.GatewayService.Controllers.SessionController.Post[95]: Failed to handle 'Post' SessionController System.Exception: MultiUserEnvironment not initialized.
   at VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus()
   at VideoOS.WebRTC.SessionHandler.InitiateSession(Guid deviceId, String token, IEnumerable`1 iceCandidateServers, Nullable`1 streamId, Nullable`1 playbackTime, Nullable`1 skipGaps, Nullable`1 speed, Boolean includeAudio)
   at VideoOS.GatewayService.Controllers.SessionController.Post(String authorization, WebRTCSession value)
2026-03-27 19:45:23.713+09:00 [    48] DEBUG      - VideoOS.WebRTC.SessionHandler.InitiateSession[70]: Initiating session for deviceId: 94bcb387-0e58-47bd-a76a-cbfe2e7abc86 
2026-03-27 19:45:23.713+09:00 [    48] ERROR      - VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus[89]: MultiUserEnvironment has not been initialized. 
2026-03-27 19:45:23.713+09:00 [    48] ERROR      - VideoOS.GatewayService.Controllers.SessionController.Post[95]: Failed to handle 'Post' SessionController System.Exception: MultiUserEnvironment not initialized.
   at VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus()
   at VideoOS.WebRTC.SessionHandler.InitiateSession(Guid deviceId, String token, IEnumerable`1 iceCandidateServers, Nullable`1 streamId, Nullable`1 playbackTime, Nullable`1 skipGaps, Nullable`1 speed, Boolean includeAudio)
   at VideoOS.GatewayService.Controllers.SessionController.Post(String authorization, WebRTCSession value)
2026-03-27 19:45:23.727+09:00 [    48] DEBUG      - VideoOS.WebRTC.SessionHandler.InitiateSession[70]: Initiating session for deviceId: f131f2e3-fd8d-457a-8d6d-858418301b1d 
2026-03-27 19:45:23.727+09:00 [    48] ERROR      - VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus[89]: MultiUserEnvironment has not been initialized. 
2026-03-27 19:45:23.727+09:00 [    48] ERROR      - VideoOS.GatewayService.Controllers.SessionController.Post[95]: Failed to handle 'Post' SessionController System.Exception: MultiUserEnvironment not initialized.
   at VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus()
   at VideoOS.WebRTC.SessionHandler.InitiateSession(Guid deviceId, String token, IEnumerable`1 iceCandidateServers, Nullable`1 streamId, Nullable`1 playbackTime, Nullable`1 skipGaps, Nullable`1 speed, Boolean includeAudio)
   at VideoOS.GatewayService.Controllers.SessionController.Post(String authorization, WebRTCSession value)
2026-03-27 19:45:23.744+09:00 [    48] DEBUG      - VideoOS.WebRTC.SessionHandler.InitiateSession[70]: Initiating session for deviceId: cbabf9bd-fbc2-40c4-83ea-339525035756 
2026-03-27 19:45:23.744+09:00 [    48] ERROR      - VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus[89]: MultiUserEnvironment has not been initialized. 
2026-03-27 19:45:23.744+09:00 [    48] ERROR      - VideoOS.GatewayService.Controllers.SessionController.Post[95]: Failed to handle 'Post' SessionController System.Exception: MultiUserEnvironment not initialized.
   at VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus()
   at VideoOS.WebRTC.SessionHandler.InitiateSession(Guid deviceId, String token, IEnumerable`1 iceCandidateServers, Nullable`1 streamId, Nullable`1 playbackTime, Nullable`1 skipGaps, Nullable`1 speed, Boolean includeAudio)
   at VideoOS.GatewayService.Controllers.SessionController.Post(String authorization, WebRTCSession value)
2026-03-27 19:45:23.757+09:00 [    48] DEBUG      - VideoOS.WebRTC.SessionHandler.InitiateSession[70]: Initiating session for deviceId: efa10b58-883c-4f2d-8d67-314b88a101e8 
2026-03-27 19:45:23.757+09:00 [    48] ERROR      - VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus[89]: MultiUserEnvironment has not been initialized. 
2026-03-27 19:45:23.757+09:00 [    48] ERROR      - VideoOS.GatewayService.Controllers.SessionController.Post[95]: Failed to handle 'Post' SessionController System.Exception: MultiUserEnvironment not initialized.
   at VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus()
   at VideoOS.WebRTC.SessionHandler.InitiateSession(Guid deviceId, String token, IEnumerable`1 iceCandidateServers, Nullable`1 streamId, Nullable`1 playbackTime, Nullable`1 skipGaps, Nullable`1 speed, Boolean includeAudio)
   at VideoOS.GatewayService.Controllers.SessionController.Post(String authorization, WebRTCSession value)
2026-03-27 19:45:23.757+09:00 [    48] DEBUG      - VideoOS.WebRTC.SessionHandler.InitiateSession[70]: Initiating session for deviceId: 144059bb-e458-4c89-bee7-e82b809edc48 
2026-03-27 19:45:23.757+09:00 [    48] ERROR      - VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus[89]: MultiUserEnvironment has not been initialized. 
2026-03-27 19:45:23.770+09:00 [    48] ERROR      - VideoOS.GatewayService.Controllers.SessionController.Post[95]: Failed to handle 'Post' SessionController System.Exception: MultiUserEnvironment not initialized.
   at VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus()
   at VideoOS.WebRTC.SessionHandler.InitiateSession(Guid deviceId, String token, IEnumerable`1 iceCandidateServers, Nullable`1 streamId, Nullable`1 playbackTime, Nullable`1 skipGaps, Nullable`1 speed, Boolean includeAudio)
   at VideoOS.GatewayService.Controllers.SessionController.Post(String authorization, WebRTCSession value)
2026-03-27 19:45:31.742+09:00 [    42] DEBUG      - VideoOS.WebRTC.SessionHandler.InitiateSession[70]: Initiating session for deviceId: 94bcb387-0e58-47bd-a76a-cbfe2e7abc86 
2026-03-27 19:45:31.742+09:00 [    42] ERROR      - VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus[89]: MultiUserEnvironment has not been initialized. 
2026-03-27 19:45:31.742+09:00 [    42] ERROR      - VideoOS.GatewayService.Controllers.SessionController.Post[95]: Failed to handle 'Post' SessionController System.Exception: MultiUserEnvironment not initialized.
   at VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus()
   at VideoOS.WebRTC.SessionHandler.InitiateSession(Guid deviceId, String token, IEnumerable`1 iceCandidateServers, Nullable`1 streamId, Nullable`1 playbackTime, Nullable`1 skipGaps, Nullable`1 speed, Boolean includeAudio)
   at VideoOS.GatewayService.Controllers.SessionController.Post(String authorization, WebRTCSession value)
2026-03-27 19:45:31.742+09:00 [    42] DEBUG      - VideoOS.WebRTC.SessionHandler.InitiateSession[70]: Initiating session for deviceId: f131f2e3-fd8d-457a-8d6d-858418301b1d 
2026-03-27 19:45:31.742+09:00 [    42] ERROR      - VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus[89]: MultiUserEnvironment has not been initialized. 
2026-03-27 19:45:31.742+09:00 [    42] ERROR      - VideoOS.GatewayService.Controllers.SessionController.Post[95]: Failed to handle 'Post' SessionController System.Exception: MultiUserEnvironment not initialized.
   at VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus()
   at VideoOS.WebRTC.SessionHandler.InitiateSession(Guid deviceId, String token, IEnumerable`1 iceCandidateServers, Nullable`1 streamId, Nullable`1 playbackTime, Nullable`1 skipGaps, Nullable`1 speed, Boolean includeAudio)
   at VideoOS.GatewayService.Controllers.SessionController.Post(String authorization, WebRTCSession value)
2026-03-27 19:45:31.763+09:00 [    42] DEBUG      - VideoOS.WebRTC.SessionHandler.InitiateSession[70]: Initiating session for deviceId: efa10b58-883c-4f2d-8d67-314b88a101e8 
2026-03-27 19:45:31.763+09:00 [    42] ERROR      - VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus[89]: MultiUserEnvironment has not been initialized. 
2026-03-27 19:45:31.763+09:00 [    42] ERROR      - VideoOS.GatewayService.Controllers.SessionController.Post[95]: Failed to handle 'Post' SessionController System.Exception: MultiUserEnvironment not initialized.
   at VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus()
   at VideoOS.WebRTC.SessionHandler.InitiateSession(Guid deviceId, String token, IEnumerable`1 iceCandidateServers, Nullable`1 streamId, Nullable`1 playbackTime, Nullable`1 skipGaps, Nullable`1 speed, Boolean includeAudio)
   at VideoOS.GatewayService.Controllers.SessionController.Post(String authorization, WebRTCSession value)
2026-03-27 19:45:31.773+09:00 [    42] DEBUG      - VideoOS.WebRTC.SessionHandler.InitiateSession[70]: Initiating session for deviceId: cbabf9bd-fbc2-40c4-83ea-339525035756 
2026-03-27 19:45:31.773+09:00 [    42] ERROR      - VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus[89]: MultiUserEnvironment has not been initialized. 
2026-03-27 19:45:31.773+09:00 [    42] ERROR      - VideoOS.GatewayService.Controllers.SessionController.Post[95]: Failed to handle 'Post' SessionController System.Exception: MultiUserEnvironment not initialized.
   at VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus()
   at VideoOS.WebRTC.SessionHandler.InitiateSession(Guid deviceId, String token, IEnumerable`1 iceCandidateServers, Nullable`1 streamId, Nullable`1 playbackTime, Nullable`1 skipGaps, Nullable`1 speed, Boolean includeAudio)
   at VideoOS.GatewayService.Controllers.SessionController.Post(String authorization, WebRTCSession value)
2026-03-27 19:45:31.773+09:00 [    42] DEBUG      - VideoOS.WebRTC.SessionHandler.InitiateSession[70]: Initiating session for deviceId: 144059bb-e458-4c89-bee7-e82b809edc48 
2026-03-27 19:45:31.773+09:00 [    42] ERROR      - VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus[89]: MultiUserEnvironment has not been initialized. 
2026-03-27 19:45:31.773+09:00 [    42] ERROR      - VideoOS.GatewayService.Controllers.SessionController.Post[95]: Failed to handle 'Post' SessionController System.Exception: MultiUserEnvironment not initialized.
   at VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus()
   at VideoOS.WebRTC.SessionHandler.InitiateSession(Guid deviceId, String token, IEnumerable`1 iceCandidateServers, Nullable`1 streamId, Nullable`1 playbackTime, Nullable`1 skipGaps, Nullable`1 speed, Boolean includeAudio)
   at VideoOS.GatewayService.Controllers.SessionController.Post(String authorization, WebRTCSession value)
2026-03-27 19:46:09.858+09:00 [    52] DEBUG      - VideoOS.WebRTC.SessionHandler.InitiateSession[70]: Initiating session for deviceId: 94bcb387-0e58-47bd-a76a-cbfe2e7abc86 
2026-03-27 19:46:09.858+09:00 [    52] ERROR      - VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus[89]: MultiUserEnvironment has not been initialized. 
2026-03-27 19:46:09.858+09:00 [    52] ERROR      - VideoOS.GatewayService.Controllers.SessionController.Post[95]: Failed to handle 'Post' SessionController System.Exception: MultiUserEnvironment not initialized.
   at VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus()
   at VideoOS.WebRTC.SessionHandler.InitiateSession(Guid deviceId, String token, IEnumerable`1 iceCandidateServers, Nullable`1 streamId, Nullable`1 playbackTime, Nullable`1 skipGaps, Nullable`1 speed, Boolean includeAudio)
   at VideoOS.GatewayService.Controllers.SessionController.Post(String authorization, WebRTCSession value)
2026-03-27 19:46:17.270+09:00 [    42] DEBUG      - VideoOS.WebRTC.SessionHandler.InitiateSession[70]: Initiating session for deviceId: 94bcb387-0e58-47bd-a76a-cbfe2e7abc86 
2026-03-27 19:46:17.270+09:00 [    42] ERROR      - VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus[89]: MultiUserEnvironment has not been initialized. 
2026-03-27 19:46:17.270+09:00 [    42] ERROR      - VideoOS.GatewayService.Controllers.SessionController.Post[95]: Failed to handle 'Post' SessionController System.Exception: MultiUserEnvironment not initialized.
   at VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus()
   at VideoOS.WebRTC.SessionHandler.InitiateSession(Guid deviceId, String token, IEnumerable`1 iceCandidateServers, Nullable`1 streamId, Nullable`1 playbackTime, Nullable`1 skipGaps, Nullable`1 speed, Boolean includeAudio)
   at VideoOS.GatewayService.Controllers.SessionController.Post(String authorization, WebRTCSession value)
2026-03-27 19:46:25.315+09:00 [    48] DEBUG      - VideoOS.WebRTC.SessionHandler.InitiateSession[70]: Initiating session for deviceId: 94bcb387-0e58-47bd-a76a-cbfe2e7abc86 
2026-03-27 19:46:25.315+09:00 [    48] ERROR      - VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus[89]: MultiUserEnvironment has not been initialized. 
2026-03-27 19:46:25.315+09:00 [    48] ERROR      - VideoOS.GatewayService.Controllers.SessionController.Post[95]: Failed to handle 'Post' SessionController System.Exception: MultiUserEnvironment not initialized.
   at VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus()
   at VideoOS.WebRTC.SessionHandler.InitiateSession(Guid deviceId, String token, IEnumerable`1 iceCandidateServers, Nullable`1 streamId, Nullable`1 playbackTime, Nullable`1 skipGaps, Nullable`1 speed, Boolean includeAudio)
   at VideoOS.GatewayService.Controllers.SessionController.Post(String authorization, WebRTCSession value)
2026-03-27 19:46:37.729+09:00 [    42] DEBUG      - VideoOS.WebRTC.SessionHandler.InitiateSession[70]: Initiating session for deviceId: 94bcb387-0e58-47bd-a76a-cbfe2e7abc86 
2026-03-27 19:46:37.729+09:00 [    42] ERROR      - VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus[89]: MultiUserEnvironment has not been initialized. 
2026-03-27 19:46:37.729+09:00 [    42] ERROR      - VideoOS.GatewayService.Controllers.SessionController.Post[95]: Failed to handle 'Post' SessionController System.Exception: MultiUserEnvironment not initialized.
   at VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus()
   at VideoOS.WebRTC.SessionHandler.InitiateSession(Guid deviceId, String token, IEnumerable`1 iceCandidateServers, Nullable`1 streamId, Nullable`1 playbackTime, Nullable`1 skipGaps, Nullable`1 speed, Boolean includeAudio)
   at VideoOS.GatewayService.Controllers.SessionController.Post(String authorization, WebRTCSession value)
2026-03-27 19:46:49.013+09:00 [    52] DEBUG      - VideoOS.WebRTC.SessionHandler.InitiateSession[70]: Initiating session for deviceId: 94bcb387-0e58-47bd-a76a-cbfe2e7abc86 
2026-03-27 19:46:49.013+09:00 [    52] ERROR      - VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus[89]: MultiUserEnvironment has not been initialized. 
2026-03-27 19:46:49.013+09:00 [    52] ERROR      - VideoOS.GatewayService.Controllers.SessionController.Post[95]: Failed to handle 'Post' SessionController System.Exception: MultiUserEnvironment not initialized.
   at VideoOS.WebRTC.SessionHandler.VerifyMultiUserEnvironmentStatus()
   at VideoOS.WebRTC.SessionHandler.InitiateSession(Guid deviceId, String token, IEnumerable`1 iceCandidateServers, Nullable`1 streamId, Nullable`1 playbackTime, Nullable`1 skipGaps, Nullable`1 speed, Boolean includeAudio)
   at VideoOS.GatewayService.Controllers.SessionController.Post(String authorization, WebRTCSession value)