I have a mix of Nest Minis, google home max, and nest WiFi. All devises as of this AM will not cast from YouTube music on any of my mobile devices as of this AM. Instead of getting the standard connected chime, I get a "negative" sounding chime.
Interesting, I can cast my android devise audio from the Home app.
Been through the troubleshooting steps (make sure everything is up to date, restart everything, including network), and nothing is taking. I did notice that my nest mini Chromecast firmware version numbers are greater then the list provided by Google for either their preview or production versions. 1.56.324896. Is what I have, but the greateat published version number is 1.56.291998