SOLVED: Jellyfin server crashes consistently during library scan (~24%) after upgrade

[Leeward]

Fix:
Moved all metadata files (.nfo, .xml, .json, .jpg, .png, .zip) out of the problematic library folder.
Removed the affected library from Jellyfin.
Re-added it clean, without any of the old metadata.
Ran a full library rescan — it completed successfully.
If your scans consistently stop partway through, check for stale or mismatched NFO files. Cleaning them out and letting Jellyfin rebuild fresh metadata fixed the issue completely.

Thank you for this! It's looks like a partial solution to my server shutdown issue. I found couple of .nfo, and .xml files. No .json or .zip. there are image files all over, so I left those alone. Didn't delete the library, but metadata scans ran to completion. I may go back and do the library re-add.