Describe the bug

update the version of the mod pack to the latest version, but I appear in my world flying, nothing of the world is seen, there is nothing but me, and nothing appears and then it crashes, there is no crash report, and now I can not get my progress back.

To Reproduce

I enter my world in the new version the same as before, but I enter and the terrain around me is not generated and then it crashes

Expected behavior

being able to enter my world and follow what I had in my world :c

Screenshots

No response

Modpack Version

3.1.1a

Server or singleplayer

Singleplayer

Version the world was created on:

3.0.1a

Other...

No response

Additional context

No response

Send debug.log

crash-2022-07-21_02.33.42-server.txt
2022-07-21-4.log

this is?

this happens when I enter my world and then it crashes and windows tells me that there are problems with the program and then it closes

try a reinstall, something non-world related seems to be broken