Describe the bug you're experiencing

After I updated my integration pack forge version from 1.20.1forge3.22 to 1.20.1forge3.29, the game crashed when creating worlds

latest.log

Reproducability

Create the world after starting the game at 1.20.1forge3.29

Mod up to date

• Before submitting this issue I updated to the newest version and reproduced it

Minecraft version

1.20.1

Modloader version

Forge

Logs

https://github.com/user-attachments/files/18785867/latest.log

oh！It was a crash caused by an upgrade from version 3.2 to version 4.2, not the forge version!

yeah also happens to me when i read the spark profile, This mod caused alot of com.structureessentials.command.Command.getSimilarBiomesFor()30.00% problem

not sure what you're talking about, but this bug report has nothing todo with lag :D
Anyway this crash is resolved in the newest version so closing this, make a new report if you got any other issues on the newest