Load Failed: An Unknown Error Occurred [Xbox One X]

Played yesterday no problem. Today I’m stuck at the attract screen with 5 minutes of “thinking” about loading and then “Load Failed: An Unknown Error Occurred”. I’ve rebooted the console in every way imaginable. I’m using the only account I have, the one I bought it with.

I’ve seen this problem reported here:

Why does this always happen with Horizon games for me? I had something very similar happen with Horizon 2 and had to delete that save and start from scratch. Don’t make me do that again or you guys are gonna need to credit my account something like 60 million.