Using Modrinth with Fabric 1.20.1. Got error "Uncaught exception in thread "main""

[liajac]

Minecraft Logs

Uncaught exception in thread "main"
java.lang.RuntimeException: Mixin transformation of net.minecraft.client.main.Main failed
	at net.fabricmc.loader.impl.launch.knot.KnotClassDelegate.getPostMixinClassByteArray(KnotClassDelegate.java:427)
	at net.fabricmc.loader.impl.launch.knot.KnotClassDelegate.tryLoadClass(KnotClassDelegate.java:323)
	at net.fabricmc.loader.impl.launch.knot.KnotClassDelegate.loadClass(KnotClassDelegate.java:218)
	at net.fabricmc.loader.impl.launch.knot.KnotClassLoader.loadClass(KnotClassLoader.java:112)
	at java.base/java.lang.ClassLoader.loadClass(Unknown Source)
	at net.fabricmc.loader.impl.game.minecraft.MinecraftGameProvider.launch(MinecraftGameProvider.java:461)
	at net.fabricmc.loader.impl.launch.knot.Knot.launch(Knot.java:74)
	at net.fabricmc.loader.impl.launch.knot.KnotClient.main(KnotClient.java:23)
Caused by: org.spongepowered.asm.mixin.transformer.throwables.MixinTransformerError: An unexpected critical error was encountered
	at org.spongepowered.asm.mixin.transformer.MixinProcessor.applyMixins(MixinProcessor.java:392)
	at org.spongepowered.asm.mixin.transformer.MixinTransformer.transformClass(MixinTransformer.java:234)
	at org.spongepowered.asm.mixin.transformer.MixinTransformer.transformClassBytes(MixinTransformer.java:202)
	at net.fabricmc.loader.impl.launch.knot.KnotClassDelegate.getPostMixinClassByteArray(KnotClassDelegate.java:422)
	... 7 more
Caused by: java.lang.ClassCastException: class com.llamalad7.mixinextras.lib.apache.commons.tuple.ImmutablePair cannot be cast to class org.apache.commons.lang3.tuple.Pair (com.llamalad7.mixinextras.lib.apache.commons.tuple.ImmutablePair and org.apache.commons.lang3.tuple.Pair are in unnamed module of loader net.fabricmc.loader.impl.launch.knot.KnotClassLoader @73ad2d6)
	at ca.fxco.memoryleakfix.config.mixinExtension.UnMixinExtension.preApply(UnMixinExtension.java:23)
	at org.spongepowered.asm.mixin.transformer.ext.Extensions.preApply(Extensions.java:156)
	at org.spongepowered.asm.mixin.transformer.TargetClassContext.preApply(TargetClassContext.java:413)
	at org.spongepowered.asm.mixin.transformer.TargetClassContext.applyMixins(TargetClassContext.java:401)
	at org.spongepowered.asm.mixin.transformer.MixinProcessor.applyMixins(MixinProcessor.java:363)
	... 10 more

Description

I'm using modrinth with fabric 1.20.1 and after a while of trying to get the right compatible mods etc as i have like 100, it came up with a massive error 'uncaught exception in thread "main"'. not sure whats causing this or how to solve. can someone help? the whole error should be in the logs

[warjort]

Looks to be a known (but not yet fixed) issue with the memoryleakfix mod?
FxMorin/MemoryLeakFix#138

[liajac]

got rid of the mod and now works perfectly fine thanks!