I have an enormous amount of untracked files (27383). Is the 'thumbs' directory not used any more or is there actually something wrong with all of these images? Thanks in advance.
If you ran facial recognition > all in the past we did not delete face thumbnails previously. I would recommend running the migration job (for thumbnails) if you haven't and then you should be able to delete everything not in the new structure. You can verify a few of them if you want, they will probably all be small faces.