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Posted

Ok so im trying to track down what exactly is causing an nbt packet issue randomly on connection to a server. I thought the easiest way to do this would be to have a mod that's client side and just prints packet information. My question though is, is there anyway of getting what mod is sending the packet and what size it is ?  So that i can compare to the packet causing the issue and then track it down further from that.

Posted

It is not recommended for normal use in a mod, but for debugging purposes this might help -- basically you remember the channel from the connection event and then try to substitute your own channel handler. I give a bit more detail here: http://jabelarminecraft.blogspot.com/p/minecraft-forge-modding.html but you'll have to do the rest of the work not sure how tricky it is.

Check out my tutorials here: http://jabelarminecraft.blogspot.com/

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    • it worked now. but is therre n outer way to use essential and forggematica?
    • Maybe a conflict with essential - make a test without it
    • ---- Minecraft Crash Report ---- // I let you down. Sorry Time: 6/21/25 5:53 PM Description: Initializing game org.spongepowered.asm.mixin.transformer.throwables.MixinTransformerError: An unexpected critical error was encountered     at org.spongepowered.asm.mixin.transformer.MixinProcessor.applyMixins(MixinProcessor.java:392) ~[mixin-0.8.4.jar:0.8.4+Jenkins-b308.git-2accda5000f7602229606b39437565542cc6fba4] {}     at org.spongepowered.asm.mixin.transformer.MixinTransformer.transformClass(MixinTransformer.java:250) ~[mixin-0.8.4.jar:0.8.4+Jenkins-b308.git-2accda5000f7602229606b39437565542cc6fba4] {}     at org.spongepowered.asm.service.modlauncher.MixinTransformationHandler.processClass(MixinTransformationHandler.java:131) ~[mixin-0.8.4.jar:0.8.4+Jenkins-b308.git-2accda5000f7602229606b39437565542cc6fba4] {}     at org.spongepowered.asm.launch.MixinLaunchPluginLegacy.processClass(MixinLaunchPluginLegacy.java:131) ~[mixin-0.8.4.jar:0.8.4+Jenkins-b308.git-2accda5000f7602229606b39437565542cc6fba4] {}     at cpw.mods.modlauncher.serviceapi.ILaunchPluginService.processClassWithFlags(ILaunchPluginService.java:154) ~[modlauncher-8.0.9.jar:8.0.9+86+master.3cf110c] {}     at cpw.mods.modlauncher.LaunchPluginHandler.offerClassNodeToPlugins(LaunchPluginHandler.java:85) ~[modlauncher-8.0.9.jar:?] {}     at cpw.mods.modlauncher.ClassTransformer.transform(ClassTransformer.java:120) ~[modlauncher-8.0.9.jar:?] {}     at cpw.mods.modlauncher.TransformingClassLoader$DelegatedClassLoader.findClass(TransformingClassLoader.java:265) ~[modlauncher-8.0.9.jar:?] {}     at cpw.mods.modlauncher.TransformingClassLoader.loadClass(TransformingClassLoader.java:136) ~[modlauncher-8.0.9.jar:?] {re:classloading,re:classloading,re:classloading}     at cpw.mods.modlauncher.TransformingClassLoader.loadClass(TransformingClassLoader.java:98) ~[modlauncher-8.0.9.jar:?] {re:classloading,re:classloading,re:classloading}     at java.lang.ClassLoader.loadClass(ClassLoader.java:357) ~[?:1.8.0_51] {}     at gg.essential.network.connectionmanager.ConnectionManager.<init>(ConnectionManager.java:212) ~[?:?] {re:mixin,re:classloading}     at gg.essential.Essential.<init>(Essential.java:139) ~[?:?] {re:mixin,re:classloading}     at gg.essential.Essential.getInstance(Essential.java:168) ~[?:?] {re:mixin,re:classloading}     at gg.essential.mixins.impl.client.MinecraftHook.preinit(MinecraftHook.java:39) ~[?:?] {re:mixin,re:classloading}     at net.minecraft.client.Minecraft.handler$zgd000$preinit(Minecraft.java:4603) ~[?:?] {re:mixin,pl:accesstransformer:B,pl:runtimedistcleaner:A,re:mixin,pl:accesstransformer:B,pl:runtimedistcleaner:A,re:mixin,pl:accesstransformer:B,pl:runtimedistcleaner:A,re:classloading,pl:accesstransformer:B,pl:mixin:APP:forgematica.mixins.json:MixinMinecraftClient,pl:mixin:APP:mafglib.mixins.json:MixinMinecraftClient,pl:mixin:APP:mixins.essential.json:client.Mixin_IncreaseMenuFpsLimit,pl:mixin:APP:mixins.essential.json:client.Mixin_RunEssentialTasks,pl:mixin:APP:mixins.essential.json:client.MixinMinecraft,pl:mixin:APP:mixins.essential.json:client.gui.Mixin_FixKeybindUnpressedInEmoteWheel,pl:mixin:APP:mixins.essential.json:client.gui.Mixin_RecalculateMenuScale,pl:mixin:APP:mixins.essential.json:client.gui.Mixin_UpdateWindowTitle_AddSPSTitle,pl:mixin:APP:mixins.essential.json:client.gui.Mixin_UpdateWindowTitle_DisplayScreen,pl:mixin:APP:mixins.essential.json:client.gui.Mixin_UpdateWindowTitle_LoadWorld,pl:mixin:APP:mixins.essential.json:compatibility.forge.Mixin_FixInternalByteBufAccess,pl:mixin:APP:mixins.essential.json:compatibility.forge.Mixin_FixPrematureByteBufFree,pl:mixin:APP:mixins.essential.json:events.Mixin_RenderTickEvent,pl:mixin:APP:mixins.essential.json:events.Mixin_RenderTickEvent_Final,pl:mixin:APP:abnormals_core.mixins.json:client.MinecraftMixin,pl:mixin:APP:kubejs-common.mixins.json:MinecraftMixin,pl:mixin:APP:flywheel.mixins.json:ShaderCloseMixin,pl:mixin:APP:create.mixins.json:WindowResizeMixin,pl:mixin:A,pl:runtimedistcleaner:A}     at net.minecraft.client.Minecraft.<init>(Minecraft.java:408) [?:?] {re:mixin,pl:accesstransformer:B,pl:runtimedistcleaner:A,re:mixin,pl:accesstransformer:B,pl:runtimedistcleaner:A,re:mixin,pl:accesstransformer:B,pl:runtimedistcleaner:A,re:classloading,pl:accesstransformer:B,pl:mixin:APP:forgematica.mixins.json:MixinMinecraftClient,pl:mixin:APP:mafglib.mixins.json:MixinMinecraftClient,pl:mixin:APP:mixins.essential.json:client.Mixin_IncreaseMenuFpsLimit,pl:mixin:APP:mixins.essential.json:client.Mixin_RunEssentialTasks,pl:mixin:APP:mixins.essential.json:client.MixinMinecraft,pl:mixin:APP:mixins.essential.json:client.gui.Mixin_FixKeybindUnpressedInEmoteWheel,pl:mixin:APP:mixins.essential.json:client.gui.Mixin_RecalculateMenuScale,pl:mixin:APP:mixins.essential.json:client.gui.Mixin_UpdateWindowTitle_AddSPSTitle,pl:mixin:APP:mixins.essential.json:client.gui.Mixin_UpdateWindowTitle_DisplayScreen,pl:mixin:APP:mixins.essential.json:client.gui.Mixin_UpdateWindowTitle_LoadWorld,pl:mixin:APP:mixins.essential.json:compatibility.forge.Mixin_FixInternalByteBufAccess,pl:mixin:APP:mixins.essential.json:compatibility.forge.Mixin_FixPrematureByteBufFree,pl:mixin:APP:mixins.essential.json:events.Mixin_RenderTickEvent,pl:mixin:APP:mixins.essential.json:events.Mixin_RenderTickEvent_Final,pl:mixin:APP:abnormals_core.mixins.json:client.MinecraftMixin,pl:mixin:APP:kubejs-common.mixins.json:MinecraftMixin,pl:mixin:APP:flywheel.mixins.json:ShaderCloseMixin,pl:mixin:APP:create.mixins.json:WindowResizeMixin,pl:mixin:A,pl:runtimedistcleaner:A}     at net.minecraft.client.main.Main.main(Main.java:149) [?:?] {re:classloading,pl:runtimedistcleaner:A}     at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.8.0_51] {}     at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[?:1.8.0_51] {}     at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.8.0_51] {}     at java.lang.reflect.Method.invoke(Method.java:497) ~[?:1.8.0_51] {}     at net.minecraftforge.fml.loading.FMLClientLaunchProvider.lambda$launchService$0(FMLClientLaunchProvider.java:51) [forge-1.16.5-36.2.20.jar:36.2] {}     at net.minecraftforge.fml.loading.FMLClientLaunchProvider$$Lambda$531/1174000532.call(Unknown Source) [forge-1.16.5-36.2.20.jar:36.2] {}     at cpw.mods.modlauncher.LaunchServiceHandlerDecorator.launch(LaunchServiceHandlerDecorator.java:37) [modlauncher-8.0.9.jar:?] {}     at cpw.mods.modlauncher.LaunchServiceHandler.launch(LaunchServiceHandler.java:54) [modlauncher-8.0.9.jar:?] {}     at cpw.mods.modlauncher.LaunchServiceHandler.launch(LaunchServiceHandler.java:72) [modlauncher-8.0.9.jar:?] {}     at cpw.mods.modlauncher.Launcher.run(Launcher.java:82) [modlauncher-8.0.9.jar:?] {}     at cpw.mods.modlauncher.Launcher.main(Launcher.java:66) [modlauncher-8.0.9.jar:?] {} Caused by: org.spongepowered.asm.mixin.throwables.MixinApplyError: Mixin [mixins.essential.json:server.integrated.MixinIntegratedServer] from phase [DEFAULT] in config [mixins.essential.json] FAILED during APPLY     at org.spongepowered.asm.mixin.transformer.MixinProcessor.handleMixinError(MixinProcessor.java:636) ~[mixin-0.8.4.jar:0.8.4+Jenkins-b308.git-2accda5000f7602229606b39437565542cc6fba4] {}     at org.spongepowered.asm.mixin.transformer.MixinProcessor.handleMixinApplyError(MixinProcessor.java:588) ~[mixin-0.8.4.jar:0.8.4+Jenkins-b308.git-2accda5000f7602229606b39437565542cc6fba4] {}     at org.spongepowered.asm.mixin.transformer.MixinProcessor.applyMixins(MixinProcessor.java:379) ~[mixin-0.8.4.jar:0.8.4+Jenkins-b308.git-2accda5000f7602229606b39437565542cc6fba4] {}     ... 28 more Caused by: org.spongepowered.asm.mixin.transformer.throwables.InvalidMixinException: Conflicting type cast at offset 4 in synthetic bridge method func_212871_a_(Ljava/lang/Object;)V     at org.spongepowered.asm.mixin.transformer.MixinPreProcessorStandard.attachUniqueMethod(MixinPreProcessorStandard.java:570) ~[mixin-0.8.4.jar:0.8.4+Jenkins-b308.git-2accda5000f7602229606b39437565542cc6fba4] {}     at org.spongepowered.asm.mixin.transformer.MixinPreProcessorStandard.attachMethods(MixinPreProcessorStandard.java:354) ~[mixin-0.8.4.jar:0.8.4+Jenkins-b308.git-2accda5000f7602229606b39437565542cc6fba4] {}     at org.spongepowered.asm.mixin.transformer.MixinPreProcessorStandard.attach(MixinPreProcessorStandard.java:302) ~[mixin-0.8.4.jar:0.8.4+Jenkins-b308.git-2accda5000f7602229606b39437565542cc6fba4] {}     at org.spongepowered.asm.mixin.transformer.MixinPreProcessorStandard.createContextFor(MixinPreProcessorStandard.java:280) ~[mixin-0.8.4.jar:0.8.4+Jenkins-b308.git-2accda5000f7602229606b39437565542cc6fba4] {}     at org.spongepowered.asm.mixin.transformer.MixinInfo.createContextFor(MixinInfo.java:1288) ~[mixin-0.8.4.jar:0.8.4+Jenkins-b308.git-2accda5000f7602229606b39437565542cc6fba4] {re:classloading}     at org.spongepowered.asm.mixin.transformer.MixinApplicatorStandard.apply(MixinApplicatorStandard.java:292) ~[mixin-0.8.4.jar:0.8.4+Jenkins-b308.git-2accda5000f7602229606b39437565542cc6fba4] {}     at org.spongepowered.asm.mixin.transformer.TargetClassContext.apply(TargetClassContext.java:383) ~[mixin-0.8.4.jar:0.8.4+Jenkins-b308.git-2accda5000f7602229606b39437565542cc6fba4] {re:classloading}     at org.spongepowered.asm.mixin.transformer.TargetClassContext.applyMixins(TargetClassContext.java:365) ~[mixin-0.8.4.jar:0.8.4+Jenkins-b308.git-2accda5000f7602229606b39437565542cc6fba4] {re:classloading}     at org.spongepowered.asm.mixin.transformer.MixinProcessor.applyMixins(MixinProcessor.java:363) ~[mixin-0.8.4.jar:0.8.4+Jenkins-b308.git-2accda5000f7602229606b39437565542cc6fba4] {}     ... 28 more A detailed walkthrough of the error, its code path and all known details is as follows: --------------------------------------------------------------------------------------- -- Head -- Thread: Render thread Stacktrace:     at org.spongepowered.asm.mixin.transformer.MixinProcessor.applyMixins(MixinProcessor.java:392) ~[mixin-0.8.4.jar:0.8.4+Jenkins-b308.git-2accda5000f7602229606b39437565542cc6fba4] {}     at org.spongepowered.asm.mixin.transformer.MixinTransformer.transformClass(MixinTransformer.java:250) ~[mixin-0.8.4.jar:0.8.4+Jenkins-b308.git-2accda5000f7602229606b39437565542cc6fba4] {}     at org.spongepowered.asm.service.modlauncher.MixinTransformationHandler.processClass(MixinTransformationHandler.java:131) ~[mixin-0.8.4.jar:0.8.4+Jenkins-b308.git-2accda5000f7602229606b39437565542cc6fba4] {}     at org.spongepowered.asm.launch.MixinLaunchPluginLegacy.processClass(MixinLaunchPluginLegacy.java:131) ~[mixin-0.8.4.jar:0.8.4+Jenkins-b308.git-2accda5000f7602229606b39437565542cc6fba4] {}     at cpw.mods.modlauncher.serviceapi.ILaunchPluginService.processClassWithFlags(ILaunchPluginService.java:154) ~[modlauncher-8.0.9.jar:8.0.9+86+master.3cf110c] {}     at cpw.mods.modlauncher.LaunchPluginHandler.offerClassNodeToPlugins(LaunchPluginHandler.java:85) ~[modlauncher-8.0.9.jar:?] {}     at cpw.mods.modlauncher.ClassTransformer.transform(ClassTransformer.java:120) ~[modlauncher-8.0.9.jar:?] {}     at cpw.mods.modlauncher.TransformingClassLoader$DelegatedClassLoader.findClass(TransformingClassLoader.java:265) ~[modlauncher-8.0.9.jar:?] {}     at cpw.mods.modlauncher.TransformingClassLoader.loadClass(TransformingClassLoader.java:136) ~[modlauncher-8.0.9.jar:?] {re:classloading,re:classloading,re:classloading,re:classloading}     at cpw.mods.modlauncher.TransformingClassLoader.loadClass(TransformingClassLoader.java:98) ~[modlauncher-8.0.9.jar:?] {re:classloading,re:classloading,re:classloading,re:classloading}     at java.lang.ClassLoader.loadClass(ClassLoader.java:357) ~[?:1.8.0_51] {}     at gg.essential.network.connectionmanager.ConnectionManager.<init>(ConnectionManager.java:212) ~[?:?] {re:mixin,re:classloading}     at gg.essential.Essential.<init>(Essential.java:139) ~[?:?] {re:mixin,re:classloading}     at gg.essential.Essential.getInstance(Essential.java:168) ~[?:?] {re:mixin,re:classloading}     at gg.essential.mixins.impl.client.MinecraftHook.preinit(MinecraftHook.java:39) ~[?:?] {re:mixin,re:classloading}     at net.minecraft.client.Minecraft.handler$zgd000$preinit(Minecraft.java:4603) ~[?:?] {re:mixin,pl:accesstransformer:B,pl:runtimedistcleaner:A,re:mixin,pl:accesstransformer:B,pl:runtimedistcleaner:A,re:mixin,pl:accesstransformer:B,pl:runtimedistcleaner:A,re:classloading,pl:accesstransformer:B,pl:mixin:APP:forgematica.mixins.json:MixinMinecraftClient,pl:mixin:APP:mafglib.mixins.json:MixinMinecraftClient,pl:mixin:APP:mixins.essential.json:client.Mixin_IncreaseMenuFpsLimit,pl:mixin:APP:mixins.essential.json:client.Mixin_RunEssentialTasks,pl:mixin:APP:mixins.essential.json:client.MixinMinecraft,pl:mixin:APP:mixins.essential.json:client.gui.Mixin_FixKeybindUnpressedInEmoteWheel,pl:mixin:APP:mixins.essential.json:client.gui.Mixin_RecalculateMenuScale,pl:mixin:APP:mixins.essential.json:client.gui.Mixin_UpdateWindowTitle_AddSPSTitle,pl:mixin:APP:mixins.essential.json:client.gui.Mixin_UpdateWindowTitle_DisplayScreen,pl:mixin:APP:mixins.essential.json:client.gui.Mixin_UpdateWindowTitle_LoadWorld,pl:mixin:APP:mixins.essential.json:compatibility.forge.Mixin_FixInternalByteBufAccess,pl:mixin:APP:mixins.essential.json:compatibility.forge.Mixin_FixPrematureByteBufFree,pl:mixin:APP:mixins.essential.json:events.Mixin_RenderTickEvent,pl:mixin:APP:mixins.essential.json:events.Mixin_RenderTickEvent_Final,pl:mixin:APP:abnormals_core.mixins.json:client.MinecraftMixin,pl:mixin:APP:kubejs-common.mixins.json:MinecraftMixin,pl:mixin:APP:flywheel.mixins.json:ShaderCloseMixin,pl:mixin:APP:create.mixins.json:WindowResizeMixin,pl:mixin:A,pl:runtimedistcleaner:A}     at net.minecraft.client.Minecraft.<init>(Minecraft.java:408) ~[?:?] {re:mixin,pl:accesstransformer:B,pl:runtimedistcleaner:A,re:mixin,pl:accesstransformer:B,pl:runtimedistcleaner:A,re:mixin,pl:accesstransformer:B,pl:runtimedistcleaner:A,re:classloading,pl:accesstransformer:B,pl:mixin:APP:forgematica.mixins.json:MixinMinecraftClient,pl:mixin:APP:mafglib.mixins.json:MixinMinecraftClient,pl:mixin:APP:mixins.essential.json:client.Mixin_IncreaseMenuFpsLimit,pl:mixin:APP:mixins.essential.json:client.Mixin_RunEssentialTasks,pl:mixin:APP:mixins.essential.json:client.MixinMinecraft,pl:mixin:APP:mixins.essential.json:client.gui.Mixin_FixKeybindUnpressedInEmoteWheel,pl:mixin:APP:mixins.essential.json:client.gui.Mixin_RecalculateMenuScale,pl:mixin:APP:mixins.essential.json:client.gui.Mixin_UpdateWindowTitle_AddSPSTitle,pl:mixin:APP:mixins.essential.json:client.gui.Mixin_UpdateWindowTitle_DisplayScreen,pl:mixin:APP:mixins.essential.json:client.gui.Mixin_UpdateWindowTitle_LoadWorld,pl:mixin:APP:mixins.essential.json:compatibility.forge.Mixin_FixInternalByteBufAccess,pl:mixin:APP:mixins.essential.json:compatibility.forge.Mixin_FixPrematureByteBufFree,pl:mixin:APP:mixins.essential.json:events.Mixin_RenderTickEvent,pl:mixin:APP:mixins.essential.json:events.Mixin_RenderTickEvent_Final,pl:mixin:APP:abnormals_core.mixins.json:client.MinecraftMixin,pl:mixin:APP:kubejs-common.mixins.json:MinecraftMixin,pl:mixin:APP:flywheel.mixins.json:ShaderCloseMixin,pl:mixin:APP:create.mixins.json:WindowResizeMixin,pl:mixin:A,pl:runtimedistcleaner:A} -- Initialization -- Details: Stacktrace:     at net.minecraft.client.main.Main.main(Main.java:149) [?:?] {re:classloading,pl:runtimedistcleaner:A}     at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.8.0_51] {}     at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[?:1.8.0_51] {}     at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.8.0_51] {}     at java.lang.reflect.Method.invoke(Method.java:497) ~[?:1.8.0_51] {}     at net.minecraftforge.fml.loading.FMLClientLaunchProvider.lambda$launchService$0(FMLClientLaunchProvider.java:51) [forge-1.16.5-36.2.20.jar:36.2] {}     at net.minecraftforge.fml.loading.FMLClientLaunchProvider$$Lambda$531/1174000532.call(Unknown Source) [forge-1.16.5-36.2.20.jar:36.2] {}     at cpw.mods.modlauncher.LaunchServiceHandlerDecorator.launch(LaunchServiceHandlerDecorator.java:37) [modlauncher-8.0.9.jar:?] {}     at cpw.mods.modlauncher.LaunchServiceHandler.launch(LaunchServiceHandler.java:54) [modlauncher-8.0.9.jar:?] {}     at cpw.mods.modlauncher.LaunchServiceHandler.launch(LaunchServiceHandler.java:72) [modlauncher-8.0.9.jar:?] {}     at cpw.mods.modlauncher.Launcher.run(Launcher.java:82) [modlauncher-8.0.9.jar:?] {}     at cpw.mods.modlauncher.Launcher.main(Launcher.java:66) [modlauncher-8.0.9.jar:?] {} -- System Details -- Details:     Minecraft Version: 1.16.5     Minecraft Version ID: 1.16.5     Operating System: Windows 10 (amd64) version 10.0     Java Version: 1.8.0_51, Oracle Corporation     Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation     Memory: 1117332648 bytes (1065 MB) / 3684696064 bytes (3514 MB) up to 9335996416 bytes (8903 MB)     CPUs: 16     JVM Flags: 4 total; -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -Xss1M -Xmx10016m -Xms256m     Launched Version: forge-36.2.20     Backend library: LWJGL version 3.2.2 build 10     Backend API: NO CONTEXT     GL Caps:      Using VBOs: Yes     Is Modded: Definitely; Client brand changed to 'forge'     Type: Client (map_client.txt)     CPU: <unknown>
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