Apparently, there was an update to a newer version of OMV that happened... todayish? I don't know; I don't recall when I clicked update or updated via apt, but apparently I did.
And everything has gone to hell. Nzbget doesn't work. Plex doesn't work. Even something as simple as trying to add the OMV Extras repository throws back an error.
The whole thing is borked.
How do I begin sorting this out? Ideally, I would prefer not to have to wipe the drive and start over, because it was such a pain getting OMV/Debian installed the first time. But I will if I have to. Please tell me there is an easier fix to all of this.