The newest version of the mod with Create 6.0.0 Crashes and the report says that Create is 0.5.1.j
I do not have duplicated instances of mods in my modpack
https://mclo.gs/qeXAnym

You have Create 0.5.1.j installed, check your game folders, you may be running from a different folder.

I'm not running from a different folder and the jar file name is create-1.20.1-6.0.1.jar currently and heres a crash report with it https://mclo.gs/mwv47TV

Reinstall create then, it might be corrupted.

I reinstalled it and it still crashed

Now it says create power loader is the reason for the crash https://mclo.gs/bIFODoB