If you use a different save file, it should still load. It's not a fix, but at least you can still play rather than it being completely broken.
I'm getting the same thing. No amount of waiting is long enough, as it will error out to the main home screen
Same with me. Loading other save files works so it's just the big save file with all of my good worlda.
You might be able to play on a separate save file. It's not a solution, but better than not being able to play at all.