i don’t get that message… but i can’t snooze the music either! Could not pause it in Sonos “now playing” window, nor in Apple control panel music window, nor on the speaker itself (which just has a white light on top, no button). The only way to turn off, is to go into Sonos settings and delete alarm… not fun.
Searching online for answers, there appear to be none.
So. I changed the alarm music to my favorite upbeat song, and shortened the time to five minutes… enough time to get ready to workout… not long enough to get angry, or freak out my dog.