This is a reoccurring problem recently after a few years of no (few...) issues with the set-up.
I have a SONOS one in the Kitchen and a SONOS playbase with Play 1 surrounds in the living room connected to the TV. I use Google Assistant (which is pretty crap at the best of times).
If I say something simple like “Ok google, play” the light flashes and nothing happens, if I then manually press the play button on the speaker or the app it works. If I then say “ok google, stop” it then says “something went wrong in the living room”, if I try to turn the music up it just does it on the TV in the other room.
I’ve reset the system, I’ve partially reset the system, I’ve rebooted the router and nothing works, the best that’s happened is that it temporarily goes back to normal before reverting again after a few days (and with no option changing).
I’ve looked for previous subjects without success.
Cheers