Google Assistant no longer controls the volume on my Sonos One. Typical dialog:
Q: OK Google. What’s the volume?
A: The volume is set at 75%
Q: OK Google, set volume 50%
A: Got it
(no change)
Q: OK Google. What’s the volume?
A: The volume is set at 75%
Q: OK Google. Lower the volume.
A: OK
Q: OK Google. What’s the volume?
A: The volume is set at 75%
