Possible Fixes

Yes

Modpack Version

10-2.13

What happened?

First time dowloaded, logged in, and everything loaded perfectly, but once i decided to create a world "CRASH"

Crash Log

https://gist.github.com/Poule777/78c9b40df779a2441e91d51dc7466fb4#file-gistfile1-txt

Latest.Log

https://gist.github.com/Poule777/f68fdec1c9a14f47bf91f464cb8fdb0a#file-gistfile1-txt

Solved! You may ask chatGPT and send him log.txt ot crash.txt with questioning "Why my "Modpack name"? I can send you my crash or log file">then just sent the file and let him help you.
Extra: If you wish you may ask him "I have crash code ???? in minecraft (minecraft launcher, curseforge ect) what can i do?"

I tried everything he said, it worked.

1. Went from 12gig to 8 gig alocated gb
2. choosed manually the 21 java file path>Avoid using Java 21 unless the modpack specifically supports it.
3. set java args -XX:+UseG1GC -XX:MaxGCPauseMillis=100 -XX:+UnlockExperimentalVMOptions
4. In windows search (Adjust the appearence and performance of Windows)/Advanced/Virtual Memory/Find and set System managed size>Set>Tick higher the button Automatically manage paging file size for all drives>OK>Apply>Restart pc

i think chatgpt is more helping with the solution, I didn't know it's capable on reading Minecraft files and solve them..... ill update if it fr works