Question
Problem with automatic masking in Lightroom

Hi, everyone
I've had a problem with Lightroom Classic for a while.
At first, the automatic lens and sky masking worked great.
Then "unexpected errors" kept coming, which were not further specified, and the masking didn't work. After each Lightroom restart I was able to mask exactly one image, after which the error came again.
I then uninstalled Lightroom, reinstalled it and integrated the catalog again. It worked for a short while and now I'm having the same problem again. I'm happy to attach a screenshot of the German message.
Is the error known, what can I do? I would hate to have to uninstall all the time...
Regards
Steffen