Hi @tenri1983,
This error is usually caused by network communication problems, so I would recommend fully rebooting your Sonos system. You would do this by restarting the Router → Sonos speakers → Controller running the Sonos app, in that order by powering them off for around one minute.
Another cause of network issues is wireless interference, so if you still experience issues after rebooting your system, then take a look into our guide on reducing wireless interference.
If you’re still having issues after following the steps above, then please reach out to our support team, as they have the necessary tools to troubleshoot this issue further with you.
I hope this helps!
Did that and …..it worked !!
Well happy
Many thanks
Brendon