FWIW, I had the same issue.
Added a 2nd HDHR, and it borked with the “unexpected error” message.
Completely non-functional LiveTV & DVR now. WTF?!
Surely folks “fixing” this by spinning up another Plex instance should give dev’s a clue where the issue is?! Hello?
Anyway - the above fix of commissioning another plex server was not enough for me - every time I accessed the DVR config page it was there for a second, then went back to the error.
Nothing would work so if you want to read what I needed to do - strap yourself in.
I had to power off my HDHR’s, then restart the original plex server, and while it was starting up and things were running “slowly” - I was able to quickly access the DVR config page from another plex client and click on “delete DVR” while it was starting.
15 minutes later and it still hadn’t “finished” deleting so I shut down the plex server again, removed the 3 files mentioned above by BigWheel:
Plex Media Server/Plug-in Support/Databases/tv.plex.providers.epg.cloud- ....
I also recursively deleted:
Plex Media Server/Plug-in Support/Caches/tv.plex.providers.epg.cloud-.....
I then started the original plex server again and it at least didn’t error and I could “finish” deleting the DVR config.
I then started the HDHR’s, and the DVR was happy to now add at least 1 of them for the time being. I added the 2nd one once the 1st one had finished it’s setup (including pulling in the guide data).
Anyway, all seems happy again for the time being. Hopefully this helps someone else until the devs can fix whatever is borked.
