Failed to start Jellyfin (code=exited, status=217/USER)

[Zyperspace]

- Running Jellyfin 10.8.10
- Debian Repository on a Raspberry Pi 4 Model B 4GB

DISCLAIMER: I'm a total Linux noob and new to this.

Full explanation: Whenever I try to start Jellyfin.service, which it tries to automatically upon launching my Raspberry, I get a bunch of errors and messages. They are not exactly encouraging from what I can tell. It was working fine a week ago, then I tried to follow a Reverse Proxy guide, and halfway through I had to leave. Now, 5 days later, Jellyfin won't even start and I don't know why. Maybe I deleted or am missing something?

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Active: failed (Result: exit-code) since [some time today]; 8 min ago
Process: 972 ExecStart=/opt/jellyfin/jellyfin.sh (code=exited, status=217/USER)
Main PID: 972 (code=exited, status=217/USER)
CPU: 3ms

: jellyfin.service: Failed with result 'exit-code'.
: jellyfin.service: Scheduled restart job, restart counter is at 5.
: Stopped Jellyfin
: jellyfin.service: Start request repeated too quickly.
: jellyfin.service: Failed with result 'exit-code'.
: Failed to start Jellyfin
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I'm at a loss for what to do, have been poking about at various forums and threads I could find by searching, but nothing I could make use of or figure out myself. Thanks beforehand.

Log is attached:

There really isn't any helpful information here unfortunately. The context above says that the jellyfin service is failing to start, but the log you provided doesn't even contain a startup sequence that can help us to understand why.

It's possible that there is no startup sequence in the logs because the execution isn't even getting to that point. But you'd have to be able to troubleshoot the linux systemd process to figure out why. It might be that this is something a simple as a typo in the service configuration. You might be missing the executable entirely. There's really no way to say from the information that we have here.

I think it's safe to say that this isn't actually a jellyfin problem though. This is an issue with the way the service is configured, the OS is configured, or the Jellyfin packages are installed. Those would be my guesses for the most likely culprit.

If you can provide information about what you did when you followed that guide, it might provide some clues.

I'm afraid I, rather embarrasingly, cannot reproduce the steps I've carried out. I will, however, start out by attempting to remove Jellyfin and start from scratch. Whether that is the source of my issue or not, will be revealed when I'm done with that. I will chime in again when I'm finished.