I am trying to play my 1.20.1 forge modpack, but it is not working. Minecraft starts, but then crashes. I do not have much experience with java and so do not know how to fix this. I am on curseforge.

 

Crash report: https://pastebin.com/TVc5FivV

 

Any help on fixing this problem is appreciated.

Make a test without Optifine

I took Optifine out of the mods folder, and upon startup, it works! However, I have resource packs that need Optifine to work, so I was wondering if there were any alternatives I could use instead that don't crash the game?

Try Rubidium + Oculus

The game crashed whilst initializing game

Error: org.spongepowered.asm.mixin.transformer.throwables.MixinTransformerError: An unexpected critical error was encountered

Crash report: https://pastebin.com/9y2fNWG8

Delete the config of these mods and try other builds - maybe also replace Rubidium with Embeddium

It still doesn't work, however replacing rubidium with embeddium does work, however the resource packs don't work.

Also add

https://www.curseforge.com/minecraft/mc-mods/textrues-embeddium-options

https://www.curseforge.com/minecraft/mc-mods/rubidium-extra

Upon testing again after adding them, the game still doesn't crash however the resource packs are still unfortunately broken.

Remove these mods and combine OptiFine HD U I6 with Forge 47.2.18

Start with Optifine - without any other mods - if this works, add the mods one by one or in groups until you find the mod, conflicting with Optifine

I tried this, and found out that Oculus is the mod that is crashing the game. I have removed it, and it now works fine! Thanks!