After creating a new world i get this error message and it crashes the game:
https://pastebin.com/CwqVzwgA

The world does get created though which is strange. Also when loading the world back up it either loads me in a void or crashes and this time sends me back to the main menu(only happens after creating a world).

first time i played with a few datapacks. Not too fancy, just some basic vanilla tweaks datapacks. After the crash i create a test world to test if the datapacks are the problem, but they were not. only difference i saw in results is that when creating a world without datapacks it wouldnt crash and close the game, but rather spawn me in a void. After a few rejoins it finnaly lets me walk around.

After a while i noticed that chunks werent being generated. At that point i reinstalled and tried again, but yet again it crashed.