YouTube broken in Safari

[jsmith189]

This only started yesterday, which is weird considering neither Safari nor Big Sur were updated. Any video I click on gives me a black screen, then I get this message if I click on the video:



Also, this is the current state of my developer window:

 

[jsmith189]

Okay edit, my YouTube Premium expired yesterday (changed cards), so I updated my payment info, re-instated Premium, and now it's working again...

Sus...