Thumbnail missing for only one library

Server Version#: 1.20.3.3437
Player Version#: 1.21.0.1410-50a34597

Hi, I have my Plex media server running on my raspberry pi. All of my movies and episodes are on an external hard drive. All of Plex data was on my SD card, so I moved it to my hard drive also using a simlink.

My Movie library and my Movie 4k library are all fine. Thumbnails, metadata, etc, everything is there. For my TV shows, it doesn’t work. When I do Refresh metadata, I get the metadata but not the thumbnails. When I go look in my files, in Info.xml, there the link. for the posters, etc, and, for instance, in com.plexapp.agents.themoviedb/, there are poster and such.

On the client side, in my console browser I have a lot of 404.

My hard drive is this

Filesystem     Type      Size  Used Avail Use% Mounted on
/dev/sdb2      fuseblk   5.5T  2.1T  3.5T  37% /disks/*******

All of the permissions of /var/lib/plexmediaserver/library (recursively) is 777, so it shouldn’t be a problem.

My guess would have been for the file system of my hard drive, since the problem started around that time, but my movies library works flawlessly for old and new movies.

I found these logs which I find weird

Oct 22, 2020 14:09:45.721 [0x6b9fd430] Debug — Calculated media file path for path [metadata://seasons/4/episodes/13/thumbs/com.plexapp.agents.thetvdb_4c1824656e8644c08bfd487ce42387323047ef00]: ["/var/lib/plexmediaserver/Library/Application Support/Plex Media Server/Metadata/TV Shows/2/b155f47242cbf77c350b38781cf1249efc62270.bundle/Contents/_combined/seasons/4/episodes/13/thumbs/com.plexapp.agents.thetvdb_4c1824656e8644c08bfd487ce42387323047ef00"]
Oct 22, 2020 14:09:45.738 [0x6b9fd430] Debug — Calling back into ourselves for photo to transcode, optimizing the process (status: 404)
Oct 22, 2020 14:09:45.741 [0x6b9fd430] Debug — Photo transcoder: Request for url [/library/metadata/34757/art/1603390184] (is local: 1 upscaled: 0)
Oct 22, 2020 14:09:45.811 [0x6b9fd430] Debug — Calling back into ourselves for photo to transcode, optimizing the process (status: 404)

There’s a status of 404 and there are no files in Contents/_combined/seasons/4/episodes/13/thumbs/

And here are all of my logs: Plex Media Server Logs_2020-10-22_14-01-17.zip (2.5 MB)

Thank you for your help

P.S. I know there are a lot of threads already about this, but I have yet to find something to solve my problem.

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