When opening World the game crashes

[xsmerREAL]

Operating System

Windows

Description of bug

Logs MultiMC-4.log so i only want to play with mods and i made my own modpack and when i try to use the MultiMC and open my world the game just crashes but when i try other launcher with the same forge/mods and everything the game doesn't crash so idk what causes this

Steps to reproduce

open Minecraft Forge 1.16.5 choose world open the world after the 100% of loading the world the text "100%" becomes "saving world" then game crashes

Suspected cause

idk

This issue is unique

• [X] I have searched the issue tracker and did not find an issue describing my bug.

[mrugtangy]

This issue is not related to the Launcher. It is related to the configs you've set.

Check the console to see what's wrong and what's doing that.