What channels are you trying to cast? Can you try casting ESPN (ESPN is
one of few that doesn't give me that error)? What device are you trying
to cast to? eg.. Chromecast, Chromecast with Google TV, Nest Display?
This just started with me as well. I can stream all the channels fine on
my devices. However, its' only an issue when casting to Nest Hub
Displays. I can cast to Google TV's with Chromecast just fine still. The
other tricky part of it.... is that it ...