The file "***" couldn't be opened

Hi everyone,

Since I updated my mac mini (2018) to macOS Catalina (currently version 10.15.1 (19B88)) I started to have this problem that after a while I couldn't open or manipulate files. I always get the following message "The file "***" couldn't be opened". It almost happens everytime to my Desktop folder while other folders keep unaffected. There is no real apparent cause to this problem.

I have tried different solutions like in repairing my disk, restarting finder running a few terminal commands without any luck. The only thing that helps is restarting my mac but this is only temporary since this issue always returns once a day. Somebody knows what is going on?

Thank you in advance!