Missing agents and scanner files

Server Version#: 1.43.0.10492
Player Version#: I am not sure how to find this.
<If providing server logs please do NOT turn on verbose logging, only debug logging should be enabled>

I recently reinstalled Plex Media Server (version 1.43.0.10492) on my Debian 13 and noticed issues with scanners and agents. Currently, I only have Plex Movie and Plex Personal Media Agents. As far as I remember, there also should be a Movie Database agent.

I also have some scanners missing. I recall there were more files before.

user@server:/tmp$ ls -l /usr/lib/plexmediaserver/Resources/Plug-ins-*/Scanners.bundle/Contents
total 12
-rw-r–r-- 1 root root 429 Feb 12 13:46 Info.plist
drwxr-xr-x 7 root root 4096 Feb 12 13:46 Resources
-rw-r–r-- 1 root root 39 Feb 12 13:46 VERSION

What can I do about this?

You should go with the available agents. The legacy ones are deprecated and due to be retired at some point.
This has been announced some years ago.
In one of the recent PMS releases, Plex have started to hide the legacy agents. You can still enable them in your server settings (Settings → [Server Name] → Library → Show legacy agents during library setup)… just keep in mind they won’t be there forever.