Inaccessible after upgrade from 10.8.13.0 to 10.9.11.0

[Riesling]

Thanks Pirate, it works now - here's in short what I did:

- create a new LXC/VE w. same OS on same host
- install jellyfin using install-debuntu.sh
- compare the files and directories I "suspected" from the beginning, starting with /etc/jellyfin
- in /etc/jellyfin/system.xml of the inaccessible instance, I found the following entires, that where NOT present in the phresh install:

Code:

    <RepositoryInfo>
      <Name>Robibero</Name>
      <Url>https://repo.codyrobibero.dev/manifest.json</Url>
      <Enabled>true</Enabled>
    </RepositoryInfo>
    <RepositoryInfo>
      <Name>jellyfinPluginManifest</Name>
      <Url>https://raw.githubusercontent.com/danieladov/jellyfinPluginManifest/master/manifest.ison</Url>
      <Enabled>true</Enabled>
    </RepositoryInfo>
    <RepositoryInfo>
      <Name>Adov</Name>
      <Url>https://raw.githubusercontent.com/danieladov/JellyfinPluginManifest/master/manifest.json</Url>
      <Enabled>true</Enabled>
    </RepositoryInfo>

After removing them and restarting, jellyfin WORKS again, like a charm, like before, even better with the newest version as it seems!  

Two of these repositories were logged with 404 not found [WRN]-Warnings since the upgrade, but we failed to consider this as the root cause and it seems these errors prevented the server from working. At least it works now after eliminating these lines and errors... :°)

Thanks to the coders and the team of Jellyfin for a GREAT piece of software and thanks to YOU dear @TheDreadPirate for your patience, in-depth knowledge and your relentless support! 

Cheerio,
~R.