I didn’t make any changes and I was listening normally until a few hours ago. If I go into the storage section, the connected disks where the music is located seem to work normally (“music folder” was already disabled for a long time as it doesn’t contain anything useful for Roon)
I got the same error. I tried to reinstall of Roon on my Windows box, did a restore and got the same issues after the restore was complete and it needed to restart.