I may have figured something that works. I unplugged all devices
including router and restart everything. (google home hubs, chromecasts,
router). I’ve read that this could be due to different versions of
software or some miscommunication between dev...
Called google on this issue as well. YouTube tv support transferred me
to chromecast support. Chromecast support transferred me to google home
support. Google home support transferred me to YouTube tv support. 3
hours on the phone ended up in circles...
Getting the same exact error on multiple google home hubs and multiple
chromecasts. How is there not a solve for this? Google are you paying
attention??