External storages SMB/CIFS - "Log-in credentials, save in database" not working


My Nextcloud is on Version 20.0.4.

In this I’m having issues with the authentication method “log-in credentials, save in database” of an external smb/cifs storage. I can’t open the storage with a normal user (domain user’s who are authorized to this share on the fileserver).
In the NC-Logs I only see the following: “RuntimeException: App class OCA\Unsplash\AppInfo\Application is not a setup via query() but directly” and when clicking onto this entry I can see a php-backtrace.

Anyone else also having this issues?
Has anyone a fix for this issue.