Server Watchdog Mixin causes crashes on server start (Exception in server tick loop)

[Kardane]

Crash at 1.20.6 fabric server start up

Crash Report:

java.lang.RuntimeException: Mixin transformation of net.minecraft.server.dedicated.DedicatedServerWatchdog failed
at app//net.fabricmc.loader.impl.launch.knot.KnotClassDelegate.getPostMixinClassByteArray(KnotClassDelegate.java:427)
at app//net.fabricmc.loader.impl.launch.knot.KnotClassDelegate.tryLoadClass(KnotClassDelegate.java:323)
at app//net.fabricmc.loader.impl.launch.knot.KnotClassDelegate.loadClass(KnotClassDelegate.java:218)
at app//net.fabricmc.loader.impl.launch.knot.KnotClassLoader.loadClass(KnotClassLoader.java:119)
at [email protected]/java.lang.ClassLoader.loadClass(ClassLoader.java:525)
at MC//net.minecraft.server.dedicated.MinecraftDedicatedServer.setupServer(MinecraftDedicatedServer.java:200)
at net.minecraft.server.MinecraftServer.runServer(MinecraftServer.java:658)
at net.minecraft.server.MinecraftServer.method_29739(MinecraftServer.java:275)
at [email protected]/java.lang.Thread.run(Thread.java:1570)
Caused by: org.spongepowered.asm.mixin.transformer.throwables.MixinTransformerError: An unexpected critical error was encountered
at app//org.spongepowered.asm.mixin.transformer.MixinProcessor.applyMixins(MixinProcessor.java:392)
at app//org.spongepowered.asm.mixin.transformer.MixinTransformer.transformClass(MixinTransformer.java:234)
at app//org.spongepowered.asm.mixin.transformer.MixinTransformer.transformClassBytes(MixinTransformer.java:202)
at app//net.fabricmc.loader.impl.launch.knot.KnotClassDelegate.getPostMixinClassByteArray(KnotClassDelegate.java:422)
... 8 more
Caused by: org.spongepowered.asm.mixin.injection.throwables.InjectionError: Critical injection failure: Callback method cancelServerWatchdog(J)J in tt20.mixins.json:DedicatedServerWatchdogMixin from mod tt20 failed injection check, (0/1) succeeded. Scanned 1 target(s). Using refmap tt20-0.5.0+mc1.20.1-refmap.json
at app//org.spongepowered.asm.mixin.injection.struct.InjectionInfo.postInject(InjectionInfo.java:468)
at app//org.spongepowered.asm.mixin.transformer.MixinTargetContext.applyInjections(MixinTargetContext.java:1384)
at app//org.spongepowered.asm.mixin.transformer.MixinApplicatorStandard.applyInjections(MixinApplicatorStandard.java:1062)
at app//org.spongepowered.asm.mixin.transformer.MixinApplicatorStandard.applyMixin(MixinApplicatorStandard.java:402)
at app//org.spongepowered.asm.mixin.transformer.MixinApplicatorStandard.apply(MixinApplicatorStandard.java:327)
at app//org.spongepowered.asm.mixin.transformer.TargetClassContext.apply(TargetClassContext.java:422)
at app//org.spongepowered.asm.mixin.transformer.TargetClassContext.applyMixins(TargetClassContext.java:403)
at app//org.spongepowered.asm.mixin.transformer.MixinProcessor.applyMixins(MixinProcessor.java:363)
... 11 more

==========================

Used Mods:
alternate-current: Alternate Current 1.8.0-beta.4
better-fabric-console: Better Fabric Console 1.1.9
carpet: Carpet Mod 1.4.141+v240429
cloth-config: Cloth Config v14 14.0.126
eyespy: Eye Spy 1.3.7+1.20.5
fabpose: FabPose 1.0.0+1.20.6
fabric-api: Fabric API 0.99.0+1.20.6
fabric-language-kotlin: Fabric Language Kotlin 1.10.20+kotlin.1.9.24
fabricloader: Fabric Loader 0.15.11
farmtweaks: FarmTweaks 1.1+1.20.6
ferritecore: FerriteCore 6.1.1
fullstackwatchdog: FullStack Watchdog 1.0.1+1.19.2-fabric
invview: InvView 1.4.15-1.20.5+
java: Java HotSpot(TM) 64-Bit Server VM 22
karns_usefulcommand: karnsusefulcommand 2.0
koreanchat: koreanChat 1.4
krypton: Krypton 0.2.7
lithium: Lithium 0.12.3
luckperms: LuckPerms 5.4.125
midnightlib: MidnightLib 1.5.5
minecraft: Minecraft 1.20.6
modernfix: ModernFix 5.17.3+mc1.20.6
nochatreports: No Chat Reports 1.20.6-v2.7.0
noisium: Noisium 2.1.0+mc1.20.5-1.20.6
notica: Notica 1.1.3+1.20.6
polymer-bundled: Polymer 0.8.4+1.20.6
potatoptimize: potatoptimize 0.0.1
recipecooldown: Recipe Cooldown 1.17.1-1.0.0
score-migrator: Score Migrator 1.20.3-1.0.2
semblance: Semblance 1.1.5
spark: spark 1.10.65
stackdeobfuscator: StackDeobfuscator 1.4.3+08e71cc
styledchat: Styled Chat 2.5.0+1.20.5
styledplayerlist: Styled Player List 3.4.0+1.20.5
suggestion_tweaker: Suggestion Tweaker 1.20.6-1.5.2
threadtweak: ThreadTweak 1.20.6-0.1.3
tt20: TT20 0.5.0
worldedit: WorldEdit 7.3.2+6779-3aca580

[JXSnack]

Heyho! This should be fixed in the update I'm about to release. I'll notify you again when it's released :]

[JXSnack]

I've just released a potential fix on Modrinth and GitHub - Please tell me if this fixed it

[guicale]

I'm getting the same exception on 1.20.4, using version 5.1 of the mod:

java.lang.RuntimeException: Mixin transformation of net.minecraft.server.dedicated.DedicatedServerWatchdog failed
        at app//net.fabricmc.loader.impl.launch.knot.KnotClassDelegate.getPostMixinClassByteArray(KnotClassDelegate.java:427)
        at app//net.fabricmc.loader.impl.launch.knot.KnotClassDelegate.tryLoadClass(KnotClassDelegate.java:323)
        at app//net.fabricmc.loader.impl.launch.knot.KnotClassDelegate.loadClass(KnotClassDelegate.java:218)
        at app//net.fabricmc.loader.impl.launch.knot.KnotClassLoader.loadClass(KnotClassLoader.java:119)
        at [email protected]/java.lang.ClassLoader.loadClass(ClassLoader.java:525)
        at MC//net.minecraft.server.dedicated.MinecraftDedicatedServer.setupServer(MinecraftDedicatedServer.java:189)
        at net.minecraft.server.MinecraftServer.runServer(MinecraftServer.java:650)
        at net.minecraft.server.MinecraftServer.method_29739(MinecraftServer.java:270)
        at [email protected]/java.lang.Thread.run(Thread.java:840)
Caused by: org.spongepowered.asm.mixin.transformer.throwables.MixinTransformerError: An unexpected critical error was encountered
        at app//org.spongepowered.asm.mixin.transformer.MixinProcessor.applyMixins(MixinProcessor.java:392)
        at app//org.spongepowered.asm.mixin.transformer.MixinTransformer.transformClass(MixinTransformer.java:234)
        at app//org.spongepowered.asm.mixin.transformer.MixinTransformer.transformClassBytes(MixinTransformer.java:202)
        at app//net.fabricmc.loader.impl.launch.knot.KnotClassDelegate.getPostMixinClassByteArray(KnotClassDelegate.java:422)
        ... 8 more
Caused by: org.spongepowered.asm.mixin.injection.throwables.InjectionError: Critical injection failure: Callback method cancelServerWatchdog(J)J in tt20.mixins.json:DedicatedServerWatchdogMixin from mod tt20 fa  led injection check, (0/1) succeeded. Scanned 1 target(s). Using refmap tt20-0.5.1+mc1.20.1-refmap.json
        at app//org.spongepowered.asm.mixin.injection.struct.InjectionInfo.postInject(InjectionInfo.java:468)
        at app//org.spongepowered.asm.mixin.transformer.MixinTargetContext.applyInjections(MixinTargetContext.java:1384)
        at app//org.spongepowered.asm.mixin.transformer.MixinApplicatorStandard.applyInjections(MixinApplicatorStandard.java:1062)
        at app//org.spongepowered.asm.mixin.transformer.MixinApplicatorStandard.applyMixin(MixinApplicatorStandard.java:402)
        at app//org.spongepowered.asm.mixin.transformer.MixinApplicatorStandard.apply(MixinApplicatorStandard.java:327)
        at app//org.spongepowered.asm.mixin.transformer.TargetClassContext.apply(TargetClassContext.java:422)
        at app//org.spongepowered.asm.mixin.transformer.TargetClassContext.applyMixins(TargetClassContext.java:403)
        at app//org.spongepowered.asm.mixin.transformer.MixinProcessor.applyMixins(MixinProcessor.java:363)
        ... 11 more

My mod list is:

• advancedbackups 3.6
• afkplus 1.4.9
• alivent-messenger 1.3.2
• alternate-current 1.8.0-beta.4
• architectury 11.1.17
• asynclocator 1.3.0
• balm-fabric 9.0.9
• better_log4j_config 1.2.0
• bettersafebed 1.20.4-14
• betterstats 3.9.7+fabric-1.20.4
• bundle_recipe v1.0.1
• c2me 0.2.0+alpha.11.67
• calmdowndog 1.1.0
• cartloader 1.0-SNAPSHOT
• chunky 1.3.146
• cloth-config 13.0.121
• connected-doors 1.2+1.20
• crops_love_rain 1.5.0+1.20.4
• deepslatecutting 1.7.0
• discerning_furnace 1.0.15
• elytratrims 3.4.0
• fabric-api 0.97.1+1.20.4
• fabric-permissions-api-v0 0.3.1
• fabricloader 0.15.11
• fabrictailor 2.3.1
• fallingtree 1.20.4.3
• ferritecore 6.0.3
• fix-mc-stats 1.0.0
• invview 1.4.14-1.20.4+
• jade 13.3.1
• java 17
• krypton 0.2.6
• ksyxis 1.3.2
• leashmod 1.0.6
• leaves_us_in_peace 1.0.22
• letmedespawn 1.2.1
• letsjeb 3.0.0
• linkart 5.4.4-1.20.2-build.133
• lithium 0.12.1
• memoryleakfix 1.1.5
• midnightlib 1.5.3
• minecraft 1.20.4
• mixintrace 1.1.1+1.17
• mr_banner_bedsheets 1.2
• mr_banner_flags 2.3
• mr_stonecutter_damage 1-mcmeta-12-41_1.19.4-1.20.5
• nethermap 4.0.0-1.20.2
• netherportalfix 15.0.1
• noisium 2.0.3+mc1.20.2-1.20.4
• oth3r-sit 1.1.6+1.20.4
• owo 0.12.6+1.20.3
• pl3xmap 1.20.4-492
• placeholder-api 2.4.0-pre.1+1.20.4
• playerstatistics 0.1.2+1.20.3
• potatoptimize 0.0.1
• reputation 0.2.5+jade.1.20
• safe-respawn 1.0.2
• sensible-sleepiness 0.0.3-1.20+
• servercore 1.5.0+1.20.4
• slumber 1.2.0
• sneakyserver 1.0.12+SNAPSHOT
• snowballkb 1.3-1.20
• spark 1.10.58
• spectatorplus 1.1.0+mc1.20.4
• sqlite-jdbc 3.41.2.1+20230506
• stackables 2.0.1
• stackdeobfuscator 1.4.3+08e71cc
• styledplayerlist 3.3.0+1.20.3
• suggestion_tweaker 1.20-1.5.2
• tbim 1.0.1
• through-the-lilypads-gently 1.1.1
• timestacker 1.1.3
• tt20 0.5.1
• villagerleads 0.0.2
• villagernames 4.5.4
• yet_another_config_lib_v3 3.5.0+1.20.4-fabric

[JXSnack]

Could you provide the whole modpack as a file? (only if it's possible, i'm currently recreating it myself)

Edit: could reproduce by recreating the modpack

[guicale]

I've found that the exception still happens without any other mods enabled (only Fabric API and TT20 5.1), running 1.20.4 with Fabric Loader 0.5.11 on Debian Stable with OpenJDK 17. I can still provide all the mod files, though I don't see much use in that.

[JXSnack]

Update: This happens on all versions above 1.20.2

[JXSnack]

I've made a hotfix which disables the server watchdog. I'll try to find a fix tomorrow
1.20.1-1.20.4
1.20.5-1.20.6
1.21

[JXSnack]

I found the solution! The issue was that the refmap was for 1.20.1, but the obfuscated method/class/field mappings were incorrect. This should be fixed in the 0.6.0 release!

[Legendmanj]

I found the solution! The issue was that the refmap was for 1.20.1, but the obfuscated method/class/field mappings were incorrect. This should be fixed in the 0.6.0 release!

please mind giving me the 0.6.0 version when it is released ;)

[JXSnack]

Just released v0.6, check it out on Modrinth -- If this issue persists, please reopen it or make a new one.