02:48:59.509
Preparing to launch minecraft client for fabric-loader-0.8.7+build.201-1.15.2
02:49:38.515
Checking installations.
02:49:38.516
Minecraft client fabric-loader-0.8.7+build.201-1.15.2 is ready to start.
02:49:38.516
Starting!
02:49:39.790
Using default game log configuration client-1.12.xml (outputs XML)
02:49:42.590
Loading for game Minecraft 1.15.2
02:49:45.962
[FabricLoader] Loading 10 mods: minecraft@1.15.2, mm@2.0, fabric-resource-loader-v0@0.1.10+06c939b30c, malilib@0.10.0-dev.21+arne.2, org_slf4j_slf4j-simple@1.7.30, org_slf4j_slf4j-api@1.7.30, fabricloader@0.8.7+build.201, optifabric@1.0.0-beta8, org_zeroturnaround_zt-zip@1.14, litematica@0.0.0-dev.20200515.184506
02:49:46.027
SpongePowered MIXIN Subsystem Version=0.8 Source=file:/C:/Users/Leo/AppData/Roaming/.minecraft/libraries/net/fabricmc/sponge-mixin/0.8+build.18/sponge-mixin-0.8+build.18.jar Service=Knot/Fabric Env=CLIENT
02:49:47.319
Error encountered during mixin config postInit step'mixins.mm.json': Failed to setup optifine
java.lang.RuntimeException: Failed to setup optifine
	at me.modmuss50.optifabric.mod.OptifabricSetup.run(OptifabricSetup.java:48)
	at com.chocohead.mm.Plugin.getMixins(Plugin.java:335)
	at org.spongepowered.asm.mixin.transformer.PluginHandle.getMixins(PluginHandle.java:128)
	at org.spongepowered.asm.mixin.transformer.MixinConfig.postInitialise(MixinConfig.java:667)
	at org.spongepowered.asm.mixin.transformer.MixinProcessor.prepareConfigs(MixinProcessor.java:543)
	at org.spongepowered.asm.mixin.transformer.MixinProcessor.select(MixinProcessor.java:440)
	at org.spongepowered.asm.mixin.transformer.MixinProcessor.checkSelect(MixinProcessor.java:416)
	at org.spongepowered.asm.mixin.transformer.MixinProcessor.applyMixins(MixinProcessor.java:285)
	at org.spongepowered.asm.mixin.transformer.MixinTransformer.transformClass(MixinTransformer.java:191)
	at org.spongepowered.asm.mixin.transformer.MixinTransformer.transformClassBytes(MixinTransformer.java:178)
	at org.spongepowered.asm.mixin.transformer.FabricMixinTransformerProxy.transformClassBytes(FabricMixinTransformerProxy.java:23)
	at net.fabricmc.loader.launch.knot.KnotClassDelegate.getPostMixinClassByteArray(KnotClassDelegate.java:157)
	at net.fabricmc.loader.launch.knot.KnotClassLoader.loadClass(KnotClassLoader.java:143)
	at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
	at net.fabricmc.loader.game.MinecraftGameProvider.launch(MinecraftGameProvider.java:190)
	at net.fabricmc.loader.launch.knot.Knot.init(Knot.java:140)
	at net.fabricmc.loader.launch.knot.KnotClient.main(KnotClient.java:26)
Caused by: java.lang.StringIndexOutOfBoundsException: String index out of range: -6
	at java.lang.String.substring(String.java:1955)
	at me.modmuss50.optifabric.mod.OptifineInjector.lambda$setup$0(OptifineInjector.java:38)
	at me.modmuss50.optifabric.mod.OptifineInjector$$Lambda$78/177267393.accept(Unknown Source)
	at java.util.HashMap$KeySet.forEach(HashMap.java:928)
	at me.modmuss50.optifabric.mod.OptifineInjector.setup(OptifineInjector.java:38)
	at me.modmuss50.optifabric.mod.OptifabricSetup.run(OptifabricSetup.java:40)
	... 16 more
02:49:48.686
Setting user: Leonardoday