Windows 10 Client 3.6.1 occurs sync-error "Some files could not be synchronized" respectively "Synchronization finished wie unresolved conflicts"

Synchronization throws error “Some files could not be synchronized” or “Synchronization finished with unresolved conflicts”.
However, in my web browser activity overview Nextcloud does not show more specifically which files are meant.
Is there any way to find out which files are meant here, and if so, how can I find out?

Thanks in advance and greetings