How to make yourself the owner of a file in BigSur if the line is not active?

Question

macOS

Help me deal with the error, in the Apple Motion program, when outputting a video, it throws an error:
cannot be saved in the because you don't have permission.
to view or change permissions, select the item in finder and choose file > get info Can you please tell me how to fix this?

Answer 1

ACL may hang on the file.
In any case, just remove the admin or do a chown via the terminal.