Redzone - Playback Failed

Hey guys - Any idea why I'm getting the error "Playback Failed" when trying to watch NFL RedZone via YouTube TV? It works fine on YouTube TV. Is the TVE stream only available on Sundays during the season and not throughout the year?

Yes I believe that is correct. Try again when the channel is broadcasting.

I am getting that frequently on all channels on Philo

Tried right now. Getting Error Code 503.

What's the deal?