Files not moved after import

Since yesterday, files are no longer moved after import. I changed nothing in my configuration. Closing the program with an abort call takes ages. I had to forcibly end it by closing the command line. Now on second try, it re-imported all files I had already categorised yesterday, without saying it already knew them. And again, it won’t close. Still waiting.
As if something is preventing it from moving the files?

Any idea how I can make clearer to you what is happening?