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class_1921/cloth-client-events-v0.mixins.json crash on FO 2.x.x/3.x.x

See original GitHub issue

Describe the bug

This cloth-client-events-v0.mixins.json error shows up on the first launch of FO or

Error: java.lang.NoClassDefFoundError: Could not initialize class net.minecraft.class_1921

Workaround: just launch again

Expected behavior

No crash

Observed/actual behavior

Crash

Steps To Reproduce

Download modpack
Launch it

Modpack version

3.1.0-alpha.1, 3.0.0-alpha.3, possibly others

Launcher

Curseforge Launcher

Install method

Fresh install/new profile

Additional context

Second launch fixes it, and I’m not yet sure why this happens in the first place. Emma suggested it may be due to duplicate Cloth API in the modpack (as Curseforge Launcher adds it automatically). Edit: removing it didn’t fix, but downgrading did… for now.

[18:06:22] [main/INFO]: Loading Minecraft 1.18.1 with Fabric Loader 0.12.11
[18:06:22] [main/INFO]: Fabric is preparing JARs on first launch, this may take a few seconds...
[18:06:29] [main/INFO]: Dependencies overridden for fabric, antighost, animatica, advancementinfo, dcch, colormatic
[18:06:29] [main/INFO]: Loading 119 mods:
	- advanced_runtime_resource_pack 0.5.4 via enhancedblockentities
	- advancementinfo 1.18-fabric0.43.1-1.3
	- animatica 0.1+1.17
	- antighost 1.18-fabric0.43.1-1.1.4
	- architectury 3.2.51
	- autoconfig1u 3.2.2 via capes
	- bettermounthud 1.1.3
	- borderlessmining 1.1.1+1.18
	- capes 1.2.2+1.18
	- cem 0.7.0
	- citresewn 0.8.1-1.18
	- cloth-api 2.0.54
	- cloth-basic-math 0.6.0 via cloth-config
	- cloth-client-events-v0 2.0.54 via cloth-api
	- cloth-common-events-v1 2.0.54 via cloth-api
	- cloth-config 6.1.48
	- cloth-datagen-api-v1 2.0.54 via cloth-api
	- cloth-scissors-api-v1 2.0.54 via cloth-api
	- cloth-utils-v1 2.0.54 via cloth-api
	- colormatic 2.4.0+mc.1.18
	- com_moandjiezana_toml_toml4j 0.7.2 via dynamicfps
	- completeconfig 1.3.3
	- continuity 1.0.3+1.18
	- crowdin-translate 1.4+1.18 via antighost
	- dcch 1.0
	- dynamicfps 2.0.6
	- enhancedblockentities 0.5+1.18
	- entityculling 1.3.3
	- fabric 0.44.0+1.18
	- fabric-api-base 0.4.1+b4f4f6cd14 via citresewn
	- fabric-api-lookup-api-v1 1.4.0+16d92c47c8 via fabric
	- fabric-biome-api-v1 6.0.1+ded849a9c8 via fabric
	- fabric-blockrenderlayer-v1 1.1.9+3ac43d95c8 via fabric
	- fabric-command-api-v1 1.1.6+3ac43d9514 via citresewn
	- fabric-commands-v0 0.2.5+b4f4f6cdc8 via fabric
	- fabric-containers-v0 0.1.18+d154e2c6c8 via fabric
	- fabric-content-registries-v0 0.4.5+6f53a73dc8 via fabric
	- fabric-crash-report-info-v1 0.1.8+3ac43d95c8 via fabric
	- fabric-dimensions-v1 2.1.7+43d29571c8 via fabric
	- fabric-entity-events-v1 1.4.5+6b21378ac8 via fabric
	- fabric-events-interaction-v0 0.4.16+bfa23f17c8 via fabric
	- fabric-events-lifecycle-v0 0.2.6+b4f4f6cdc8 via fabric
	- fabric-game-rule-api-v1 1.0.10+3ac43d95c8 via fabric
	- fabric-item-api-v1 1.3.0+691a79b5c8 via fabric
	- fabric-item-groups-v0 0.3.3+3ac43d95c8 via fabric
	- fabric-key-binding-api-v1 1.0.8+c8aba2f3c8 via fabric
	- fabric-keybindings-v0 0.2.6+b4f4f6cdc8 via fabric
	- fabric-language-kotlin 1.7.0+kotlin.1.6.0
	- fabric-lifecycle-events-v1 1.4.10+c15ca335c8 via fabric
	- fabric-loot-tables-v1 1.0.8+3ac43d95c8 via fabric
	- fabric-mining-level-api-v1 1.0.3+3ac43d95c8 via fabric
	- fabric-mining-levels-v0 0.1.7+b4f4f6cdc8 via fabric
	- fabric-models-v0 0.3.3+3ac43d95c8 via fabric
	- fabric-networking-api-v1 1.0.18+3ac43d95c8 via fabric
	- fabric-networking-v0 0.3.5+b4f4f6cdc8 via fabric
	- fabric-object-builder-api-v1 1.11.0+3b82842ec8 via fabric
	- fabric-object-builders-v0 0.7.8+3ac43d95c8 via fabric
	- fabric-particles-v1 0.2.9+526dc1acc8 via fabric
	- fabric-registry-sync-v0 0.8.5+3ac43d95c8 via fabric
	- fabric-renderer-api-v1 0.4.9+3ac43d95c8 via fabric
	- fabric-renderer-indigo 0.4.12+3ac43d95c8 via fabric
	- fabric-renderer-registries-v1 3.2.7+b4f4f6cdc8 via fabric
	- fabric-rendering-data-attachment-v1 0.3.4+7242e9d7c8 via fabric
	- fabric-rendering-fluids-v1 0.1.18+3ac43d95c8 via fabric
	- fabric-rendering-v0 1.1.9+b4f4f6cdc8 via fabric
	- fabric-rendering-v1 1.10.3+6b21378ac8 via fabric
	- fabric-resource-loader-v0 0.4.11+3ac43d9514 via borderlessmining
	- fabric-screen-api-v1 1.0.7+3ac43d95c8 via fabric
	- fabric-screen-handler-api-v1 1.1.11+3ac43d95c8 via fabric
	- fabric-structure-api-v1 2.0.8+295197a7c8 via fabric
	- fabric-tag-extensions-v0 1.2.5+3ac43d95c8 via fabric
	- fabric-textures-v0 1.0.9+3ac43d95c8 via fabric
	- fabric-tool-attribute-api-v1 1.3.4+7de09f55c8 via fabric
	- fabric-transfer-api-v1 1.5.5+b4f4f6cdc8 via fabric
	- fabricloader 0.12.11
	- fabrishot 1.6.0
	- fastopenlinksandfolders 1.0.0
	- ferritecore 4.0.0
	- indium 1.0.2-alpha1+mc1.18
	- iris 1.1.3
	- itemmodelfix 1.0.2+1.17
	- java 17
	- lambdabettergrass 1.2.1+1.17
	- lambdynlights 2.1.0+1.17
	- languagereload 1.2
	- lazydfu 0.1.2
	- lithium 0.7.6
	- minecraft 1.18.1
	- mm 2.1 via slight-gui-modifications
	- modmenu 3.0.0
	- morechathistory 1.1.0
	- no-telemetry 1.3.0
	- nofade 1.18-2.0.1
	- notenoughcrashes 4.1.3+1.18
	- org_anarres_jcpp 1.4.14 via iris
	- org_aperlambda_lambdajcommon 1.8.1 via spruceui
	- org_codehaus_groovy_groovy 3.0.8 via slight-gui-modifications
	- org_codehaus_groovy_groovy-jsr223 3.0.8 via slight-gui-modifications
	- org_jetbrains_kotlin_kotlin-reflect 1.6.0 via fabric-language-kotlin
	- org_jetbrains_kotlin_kotlin-stdlib 1.6.0 via fabric-language-kotlin
	- org_jetbrains_kotlin_kotlin-stdlib-jdk7 1.6.0 via fabric-language-kotlin
	- org_jetbrains_kotlin_kotlin-stdlib-jdk8 1.6.0 via fabric-language-kotlin
	- org_jetbrains_kotlinx_kotlinx-coroutines-core-jvm 1.5.2 via fabric-language-kotlin
	- org_jetbrains_kotlinx_kotlinx-coroutines-jdk8 1.5.2 via fabric-language-kotlin
	- org_jetbrains_kotlinx_kotlinx-serialization-cbor-jvm 1.3.1 via fabric-language-kotlin
	- org_jetbrains_kotlinx_kotlinx-serialization-core-jvm 1.3.1 via fabric-language-kotlin
	- org_jetbrains_kotlinx_kotlinx-serialization-json-jvm 1.3.1 via fabric-language-kotlin
	- org_joml_joml 1.10.2 via sodium
	- org_slf4j_slf4j-api 1.7.12 via iris
	- pride 1.1.0+1.17 via lambdynlights
	- reeses-sodium-options 1.2.3
	- slight-gui-modifications 2.0.2
	- smoothboot 1.18-1.7.0
	- sodium 0.4.0-alpha5+build.9
	- sodium-extra 0.3.7
	- spruceui 3.3.0+1.17 via lambdabettergrass
	- tooltipfix 1.0.4-1.18
	- wi_zoom 1.3-MC1.18.1
	- yosbr 0.1.1
[18:06:34] [main/INFO]: SpongePowered MIXIN Subsystem Version=0.8.4 Source=file:/C:/Users/Madis/curseforge/minecraft/Install/libraries/net/fabricmc/sponge-mixin/0.10.7+mixin.0.8.4/sponge-mixin-0.10.7+mixin.0.8.4.jar Service=Knot/Fabric Env=CLIENT
[18:06:34] [main/INFO]: Compatibility level set to JAVA_16
[18:06:34] [main/INFO]: Compatibility level set to JAVA_17
[18:06:34] [main/ERROR]: Uncaught exception in thread "main"
java.lang.RuntimeException: Error creating Mixin config cloth-client-events-v0.mixins.json for mod cloth-client-events-v0
	at net.fabricmc.loader.impl.launch.FabricMixinBootstrap.init(FabricMixinBootstrap.java:90) ~[fabric-loader-0.12.11.jar:?]
	at net.fabricmc.loader.impl.launch.knot.Knot.init(Knot.java:148) ~[fabric-loader-0.12.11.jar:?]
	at net.fabricmc.loader.impl.launch.knot.Knot.launch(Knot.java:71) ~[fabric-loader-0.12.11.jar:?]
	at net.fabricmc.loader.impl.launch.knot.KnotClient.main(KnotClient.java:23) ~[fabric-loader-0.12.11.jar:?]
Caused by: org.spongepowered.asm.launch.MixinInitialisationError: Error initialising mixin config cloth-client-events-v0.mixins.json
	at org.spongepowered.asm.mixin.transformer.Config.create(Config.java:153) ~[sponge-mixin-0.10.7+mixin.0.8.4.jar:0.10.7+mixin.0.8.4]
	at org.spongepowered.asm.mixin.Mixins.createConfiguration(Mixins.java:100) ~[sponge-mixin-0.10.7+mixin.0.8.4.jar:0.10.7+mixin.0.8.4]
	at org.spongepowered.asm.mixin.Mixins.addConfiguration(Mixins.java:87) ~[sponge-mixin-0.10.7+mixin.0.8.4.jar:0.10.7+mixin.0.8.4]
	at net.fabricmc.loader.impl.launch.FabricMixinBootstrap.init(FabricMixinBootstrap.java:88) ~[fabric-loader-0.12.11.jar:?]
	... 3 more
Caused by: java.lang.IllegalArgumentException: The specified resource 'cloth-client-events-v0.mixins.json' was invalid or could not be read
	at org.spongepowered.asm.mixin.transformer.MixinConfig.create(MixinConfig.java:1290) ~[sponge-mixin-0.10.7+mixin.0.8.4.jar:0.10.7+mixin.0.8.4]
	at org.spongepowered.asm.mixin.transformer.Config.create(Config.java:148) ~[sponge-mixin-0.10.7+mixin.0.8.4.jar:0.10.7+mixin.0.8.4]
	at org.spongepowered.asm.mixin.Mixins.createConfiguration(Mixins.java:100) ~[sponge-mixin-0.10.7+mixin.0.8.4.jar:0.10.7+mixin.0.8.4]
	at org.spongepowered.asm.mixin.Mixins.addConfiguration(Mixins.java:87) ~[sponge-mixin-0.10.7+mixin.0.8.4.jar:0.10.7+mixin.0.8.4]
	at net.fabricmc.loader.impl.launch.FabricMixinBootstrap.init(FabricMixinBootstrap.java:88) ~[fabric-loader-0.12.11.jar:?]
	... 3 more