I receive this error message (“Music Library Problem”) every morning.
As I have done nothing to my system, other than update the SONOS software, it can only be an issue with that update.
I have several speakers dotted around the house and my music library which SONOS accesses is on my 2020 iMac, running 12.3.1 (Monterey)
I read that it has been a topic for some time and there are many “try this”, “try that”.
Is there a definitive fix from SONOS?