The Iris Project•11mo ago

1.20.4 incompatibilty with essential mod leading to crash when loading world

Hello, so i decided to transfer my 1.20.1 modpack to 1.20.4 and noticed that the game would crash each time i would try to enter a world. At first it caught me offguard, because the modpack was compatible before the transfer so i decided to have a look at what caused the crashes I am using the latest version of fabric(0.15.4), esentials and iris(1.6.14) for fabric 1.20.4. Error code -1, :

The game crashed whilst unexpected error
Error: java.lang.ClassCastException: class net.minecraft.class_757 cannot be cast to class net.coderbot.iris.mixin.GameRendererAccessor (net.minecraft.class_757 and net.coderbot.iris.mixin.GameRendererAccessor are in unnamed module of loader net.fabricmc.loader.impl.launch.knot.KnotClassLoader @55040f2f)

The game crashed whilst unexpected error
Error: java.lang.ClassCastException: class net.minecraft.class_757 cannot be cast to class net.coderbot.iris.mixin.GameRendererAccessor (net.minecraft.class_757 and net.coderbot.iris.mixin.GameRendererAccessor are in unnamed module of loader net.fabricmc.loader.impl.launch.knot.KnotClassLoader @55040f2f)

5 Replies

Slooshie•11mo ago

this issue was just reported now. Downgrading your fabric vedrsion might fix it

Slab eggOP•11mo ago

Really? lol

m•11mo ago

downgrade to 0.5.13 0.15.3 i just had this issue and talked with essential moderators

Slab eggOP•11mo ago

thankss wow what a coincidence

m•11mo ago

yup essential is the mod causing the issue with 0.5.14

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Programming

1.20.4 incompatibilty with essential mod leading to crash when loading world