Music assistant voice control acts like it's working, but no music starts

Is anyone successfully using Music Assistant with Voice Assist? I’ve been trying to get this to work for a few months now… off and on.

I’m at a point where it appears that everything is working. Voice Assist responds with an ‘okay’ after I ask it to play music, but it never actually starts anything. I am able to see it is recognizing the intent and properly using the MassPlayMediaAssist intent… but it never actually does anything.

I’m not getting any errors that I can see, but Music Assistant isn’t playing anything.

Is there some additional way to see where an intent action might be failing?