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I got this error while trying to open Minecraft 1.19.

ZackInTheBox
in Support & Bug Reports

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Posted

I got this error while trying to open Minecraft 1.19. with forge and optifine

The game crashed whilst initializing game Error: java.lang.NoClassDefFoundError: net/minecraftforge/client/model/data/IModelData Exit Code: -1

 

Edited by ZackInTheBox

  • Quote

    Forge 1.19 has breaking changes recently, mods need to update for them. Check if there are updated versions of your mods or downgrade Forge.

    Please post debug.log for further informations.

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