I am experiencing this as well. Other worlds open just fine, but this one has locked me out entirely.
I am experiencing this too, but we have the cartridge, so I’m not sure how to redownload it.
Our happened as we were playing on a split screen and I was using the loom. It’s been 24 hours and Minecraft crashes whenever we load that world.
Other worlds still open and so do realms.
This has been resolved.