Connection failure

[kirnon]

Hi, 

I've just moved to Linux Mint and installed Jellyfin.
While following some youtube things for setup it seems to have broken something.

I now get to the login screen with my username and password and it just comes up with

Connection Failure
We're unab le to connect to the selected server right now. Please ensure it is running and try again.

I've gone into the terminal to try get it to run. When I use the command:
sudo service jellyfin status it returns Unit jellyfin.service could not be found.

I don't know what to do?

I've run timeshift to when I first installed Mint and reinstalled jellyfin to no avail?

I'm now stuck.

Please help.