When I click The Retrieve Data button,it shows failed. Why?

The first problem is that sometimes it fails directly. From the perspective of debugging code, it never enters the relevant interface of hikdriverplaybackmanager.cs.So I don’t know why milestone internal code returned failure?​

Please have a look at the EdgeStorage.log in the XProtect Recording Server folder. It is likely to give you an indication of what goes wrong.

I still don’t know why I failed.Please give a hand.

These issues should be solved in the 2020 R2 release coming out next month.