Trouble starting a dashboard, HTTP Error 500

Hello, we’ve run into this problem before but I can’t recall what the fix was. Has anyone else experienced this?

When starting UD, the server seems to start normally, no errors. But when trying to browse to the dashboard I immediately receive an error 500. This is true for our custom dashboard as well as an empty dashboard.

With verbose logging enabled we can see the following when sending a request to the server:

[Error] Microsoft.AspNetCore.DataProtection.KeyManagement.KeyRingProvider An error occurred while reading the key ring.

Screenshot:

Hi

did you solve this issue? i have the exact same issue.
Or does anyone else have a solution?

regards Nathan