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[1.16.5] Error "malformed input around byte" when trying to connect to modded server with my mod


bibouche_
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Hey, I have a minecraft modded server running on mohist in order to test my mod, however, I can connect to the server but can't join the world because of the following error : "UTFDataFormatException: malformed input around byte", and the thing is, it works perfectly fine in singleplayer, and I don't know at all what is causing this error. So if I can get some help it would be nice, thanks.

And the only error I have on the console server side is :

>.... [14:38:42 WARN]: java.lang.NullPointerException
>.... [14:38:42 WARN]: at hu.montlikadani.tablist.bukkit.tablist.groups.impl.ReflectionHandled.unregisterTeam(ReflectionHandled.java:177)
>.... [14:38:42 WARN]: at hu.montlikadani.tablist.bukkit.tablist.groups.Groups.removePlayerGroup(Groups.java:202)
>.... [14:38:42 WARN]: at hu.montlikadani.tablist.bukkit.TabList.lambda$onPlayerQuit$11(TabList.java:373)
>.... [14:38:42 WARN]: at java.base/java.util.Collection.removeIf(Unknown Source)
>.... [14:38:42 WARN]: at java.base/java.util.Collections$SetFromMap.removeIf(Unknown Source)
>.... [14:38:42 WARN]: at hu.montlikadani.tablist.bukkit.TabList.onPlayerQuit(TabList.java:371)
>.... [14:38:42 WARN]: at hu.montlikadani.tablist.bukkit.listeners.Listeners.onPlayerLeave(Listeners.java:55)
>.... [14:38:42 WARN]: at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
>.... [14:38:42 WARN]: at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
>.... [14:38:42 WARN]: at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
>.... [14:38:42 WARN]: at java.base/java.lang.reflect.Method.invoke(Unknown Source)
>.... [14:38:42 WARN]: at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:303)
>.... [14:38:42 WARN]: at co.aikar.timings.TimedEventExecutor.execute(TimedEventExecutor.java:76)
>.... [14:38:42 WARN]: at org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.java:70)
>.... [14:38:42 WARN]: at org.bukkit.plugin.SimplePluginManager.fireEvent(SimplePluginManager.java:588)
>.... [14:38:42 WARN]: at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.java:573)
>.... [14:38:42 WARN]: at net.minecraft.server.management.PlayerList.func_72367_e(PlayerList.java:401)
>.... [14:38:42 WARN]: at net.minecraft.server.management.PlayerList.disconnect(PlayerList.java:386)
>.... [14:38:42 WARN]: at net.minecraft.network.play.ServerPlayNetHandler.func_147231_a(ServerPlayNetHandler.java:1534)
>.... [14:38:42 WARN]: at net.minecraft.network.NetworkManager.func_179293_l(NetworkManager.java:387)
>.... [14:38:42 WARN]: at net.minecraft.network.NetworkSystem.func_151269_c(NetworkSystem.java:161)
>.... [14:38:42 WARN]: at net.minecraft.server.MinecraftServer.func_71190_q(MinecraftServer.java:1055)
>.... [14:38:42 WARN]: at net.minecraft.server.dedicated.DedicatedServer.func_71190_q(DedicatedServer.java:334)
>.... [14:38:42 WARN]: at net.minecraft.server.MinecraftServer.func_71217_p(MinecraftServer.java:945)
>.... [14:38:42 WARN]: at net.minecraft.server.MinecraftServer.func_240802_v_(MinecraftServer.java:760)
>.... [14:38:42 WARN]: at net.minecraft.server.MinecraftServer.func_240783_a_(MinecraftServer.java:270)
>.... [14:38:42 WARN]: at java.base/java.lang.Thread.run(Unknown Source)

 

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did you use other mod on the server?
because the problem is this class: 'hu.montlikadani.tablist.bukkit.tablist.groups.impl.ReflectionHandled'
but i can't find the class in your repo
i think the code which throws the NullPointerException is client side
which would explain why there is no problem in the single player

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alright so the author of the plugin says that it doesn't seem to be caused by the plugin.

And so I looked on the logs of my minecraft launcher and I got this error when I connect:

[19:57:09] [Render thread/FATAL] [minecraft/ThreadTaskExecutor]: Error executing task on Client
java.util.NoSuchElementException: packet_handler
	at io.netty.channel.DefaultChannelPipeline.getContextOrDie(DefaultChannelPipeline.java:1119) ~[netty-all-4.1.25.Final.jar:4.1.25.Final] {}
	at io.netty.channel.DefaultChannelPipeline.addBefore(DefaultChannelPipeline.java:260) ~[netty-all-4.1.25.Final.jar:4.1.25.Final] {}
	at io.netty.channel.DefaultChannelPipeline.addBefore(DefaultChannelPipeline.java:249) ~[netty-all-4.1.25.Final.jar:4.1.25.Final] {}
	at net.minecraftforge.network.NetworkFilters.lambda$injectIfNecessary$1(NetworkFilters.java:48) ~[forge:?] {re:classloading}
	at com.google.common.collect.RegularImmutableMap.forEach(RegularImmutableMap.java:146) ~[guava-21.0.jar:?] {}
	at net.minecraftforge.network.NetworkFilters.injectIfNecessary(NetworkFilters.java:44) ~[forge:?] {re:classloading}
	at net.minecraftforge.fml.network.NetworkHooks.sendMCRegistryPackets(NetworkHooks.java:121) ~[forge:?] {re:classloading}
	at net.minecraft.client.network.play.ClientPlayNetHandler.func_147282_a(ClientPlayNetHandler.java:399) ~[?:?] {re:classloading,pl:runtimedistcleaner:A}
	at net.minecraft.network.play.server.SJoinGamePacket.func_148833_a(SourceFile:110) ~[?:?] {re:classloading}
	at net.minecraft.network.play.server.SJoinGamePacket.func_148833_a(SourceFile:18) ~[?:?] {re:classloading}
	at net.minecraft.network.PacketThreadUtil.lambda$checkThreadAndEnqueue$0(PacketThreadUtil.java:36) ~[?:?] {re:classloading,xf:OptiFine:default}
	at net.optifine.util.PacketRunnable.run(PacketRunnable.java:28) ~[?:?] {re:classloading}
	at net.minecraft.util.concurrent.ThreadTaskExecutor.func_213166_h(ThreadTaskExecutor.java:189) ~[?:?] {re:classloading,pl:accesstransformer:B,xf:OptiFine:default}
	at net.minecraft.util.concurrent.RecursiveEventLoop.func_213166_h(SourceFile:23) ~[?:?] {re:classloading}
	at net.minecraft.util.concurrent.ThreadTaskExecutor.func_213168_p(ThreadTaskExecutor.java:151) ~[?:?] {re:classloading,pl:accesstransformer:B,xf:OptiFine:default}
	at net.minecraft.util.concurrent.ThreadTaskExecutor.func_213160_bf(ThreadTaskExecutor.java:128) ~[?:?] {re:classloading,pl:accesstransformer:B,xf:OptiFine:default}
	at net.minecraft.client.Minecraft.func_195542_b(Minecraft.java:947) ~[?:?] {re:classloading,pl:accesstransformer:B,pl:runtimedistcleaner:A}
	at net.minecraft.client.Minecraft.func_99999_d(Minecraft.java:607) ~[?:?] {re:classloading,pl:accesstransformer:B,pl:runtimedistcleaner:A}
	at net.minecraft.client.main.Main.main(Main.java:184) ~[minecraft-1.16.5-client.jar:?] {re:classloading,pl:runtimedistcleaner:A}
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.8.0_301] {}
	at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) ~[?:1.8.0_301] {}
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) ~[?:1.8.0_301] {}
	at java.lang.reflect.Method.invoke(Unknown Source) ~[?:1.8.0_301] {}
	at net.minecraftforge.fml.loading.FMLClientLaunchProvider.lambda$launchService$0(FMLClientLaunchProvider.java:51) ~[forge-1.16.5-36.2.1-launcher.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:?] {}
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.8.0_301] {}
	at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) ~[?:1.8.0_301] {}
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) ~[?:1.8.0_301] {}
	at java.lang.reflect.Method.invoke(Unknown Source) ~[?:1.8.0_301] {}
	at io.github.zekerzhayard.forgewrapper.installer.Main.main(Main.java:52) [ForgeWrapper-1.5.1.jar:1.5.1] {}
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.8.0_301] {}
	at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) ~[?:1.8.0_301] {}
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) ~[?:1.8.0_301] {}
	at java.lang.reflect.Method.invoke(Unknown Source) ~[?:1.8.0_301] {}
	at org.multimc.onesix.OneSixLauncher.launchWithMainClass(OneSixLauncher.java:210) [NewLaunch.jar:?] {}
	at org.multimc.onesix.OneSixLauncher.launch(OneSixLauncher.java:245) [NewLaunch.jar:?] {}
	at org.multimc.EntryPoint.listen(EntryPoint.java:143) [NewLaunch.jar:?] {}
	at org.multimc.EntryPoint.main(EntryPoint.java:34) [NewLaunch.jar:?] {}

 

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