"your changes could not be saved" trying to change libs settings

Server Version#: 1.41.3.9314
Hi there

I’m running plex server on Ubuntu 20.04
I had no issues with the system for many years, but now I’m facing problem to change libs (located on the same ubuntu) scanner - “your changes could not be saved”. I can change everything else via web console, but not the scanner. I can’t do this while adding new library nor editing existing one.
Wasn’t able to google the solution for the same exact config by other people that experienced the same error.
What should I look into to try to fix this?

Best regards

Have you tried restarting the Plex service?

Also, maybe check permissions on the folder for the library?

Check out Chuckpa’s tool for database maintenance, maybe the db is corrupted?

I know this Reddit thread isn’t specific to Linux, but Synology runs on Linux technically.

https://www.reddit.com/r/PleX/comments/10z7ng5/your_changes_could_not_be_saved_issue_while/

“Have you tried restarting the Plex service?”
Sure, few times trying every ideas I’ve read on forums

“maybe check permissions on the folder for the library”
It’s set to 777, but the owner and group is me, I have no idea what should I try. Deluge client has no issues to download files there.

“Check out Chuckpa’s tool for database maintenance, maybe the db is corrupted?”
Thank you, I’ll try it, but it happens even with library dedicated to the directory with a single movie, I’ve also tried to delete and set up library as a new one, no success.

Reddit - Dive into anything
I’ve seen that before, tried what is suitable to my config, like stop lib scanning, but

Deleting libraries etc won’t have much affect if the database is corrupted somewhere. I’d try the repair tool to be certain it’s not a database problem.

Logs ZIP file please which capture the error ?

how to tune that? I’ve turned it on, tried to get an error and didn’t find that in log

May I see the logs ZIP please?

You do have DEBUG logging enabled before recreating the failure ?

plex_log.zip (2.3 KB)

here it is
i turned logging on, tried to change scanner for particular lib, got the “can’t save changes”, turn logging off and made this zip-file

Database is OK, I’ve performed check.

You provided the player logs. I don’t need those.

Settings - Server - Troubleshooting

^^ These logs please

Please try again

Sorry, newer had used in the past + my interface is not in English
Plex Media Server Logs_2025-01-17_13-43-14.zip (1.3 MB)

Looks like you’re trying to pair a legacy scanner (Plex Movie Scanner with Disc Image Support) with the Plex Movie agent.

Plex Movie agent only works with Plex Movie scanner.

Thank you, but it allows to select only “Plex Video Files” option, anything else causes “can’t save changes” message

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