Took a lot at the logs (should have done this first), and found the problem.
I recently re-located the PMS to the attached HD that has my media files,
Did the move with a symbolic link, and everything else (as far as I can tell) is working fine, but the “Plex Media Scanner Analysis.log” is showing errors
(I tested with an SD card with PMS before the move, and there’s no errors)
I’ll post a separate thread on this here: Scanner Error after Relocating Plex Media Server Data Directory