Lost connection: Internal Exception: io.netty.handler.codec.EncoderException: Failed to encode packet 'clientbound/minecr aft:set_entity_data' #225
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resolution: duplicate
resolution: invalid
resolution: won't fix
status: needs triage
type: bug
type: feature
type: performance
type: question
version: 1.19.4
version: 1.20
version: 1.20.1
version: 1.20.2
version: 1.20.4
version: 1.20.6
version: 1.21.11
version: 1.21.4
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Reference
Minecraft/Folia#225
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Stack trace
[21:32:28 ERROR]: Error sending packet clientbound/minecraft:set_entity_data (skippable? false)
io.netty.handler.codec.EncoderException: Failed to encode packet 'clientbound/minecraft:set_entity_data'
at net.minecraft.network.codec.IdDispatchCodec.encode(IdDispatchCodec.java:53) ~[folia-1.20.6.jar:1.20.6-DEV-78f49e0]
at net.minecraft.network.codec.IdDispatchCodec.encode(IdDispatchCodec.java:20) ~[folia-1.20.6.jar:1.20.6-DEV-78f49e0]
at net.minecraft.network.PacketEncoder.encode(PacketEncoder.java:26) ~[folia-1.20.6.jar:1.20.6-DEV-78f49e0]
at net.minecraft.network.PacketEncoder.encode(PacketEncoder.java:12) ~[folia-1.20.6.jar:1.20.6-DEV-78f49e0]
at io.netty.handler.codec.MessageToByteEncoder.write(MessageToByteEncoder.java:107) ~[netty-codec-4.1.97.Final.jar:4.1.97.Final]
at io.netty.channel.AbstractChannelHandlerContext.invokeWrite0(AbstractChannelHandlerContext.java:881) ~[netty-transport-4.1.97.Final.jar:4.1.97
.Final]
at io.netty.channel.AbstractChannelHandlerContext.invokeWrite(AbstractChannelHandlerContext.java:863) ~[netty-transport-4.1.97.Final.jar:4.1.97.
Final]
at io.netty.channel.AbstractChannelHandlerContext.write(AbstractChannelHandlerContext.java:968) ~[netty-transport-4.1.97.Final.jar:4.1.97.Final]
at io.netty.channel.AbstractChannelHandlerContext.write(AbstractChannelHandlerContext.java:856) ~[netty-transport-4.1.97.Final.jar:4.1.97.Final]
at io.netty.handler.codec.MessageToMessageEncoder.write(MessageToMessageEncoder.java:113) ~[netty-codec-4.1.97.Final.jar:4.1.97.Final]
at io.netty.channel.AbstractChannelHandlerContext.invokeWrite0(AbstractChannelHandlerContext.java:881) ~[netty-transport-4.1.97.Final.jar:4.1.97
.Final]
at io.netty.channel.AbstractChannelHandlerContext.invokeWrite(AbstractChannelHandlerContext.java:863) ~[netty-transport-4.1.97.Final.jar:4.1.97.
Final]
at io.netty.channel.AbstractChannelHandlerContext.write(AbstractChannelHandlerContext.java:968) ~[netty-transport-4.1.97.Final.jar:4.1.97.Final]
at io.netty.channel.AbstractChannelHandlerContext.write(AbstractChannelHandlerContext.java:856) ~[netty-transport-4.1.97.Final.jar:4.1.97.Final]
at io.netty.channel.ChannelOutboundHandlerAdapter.write(ChannelOutboundHandlerAdapter.java:113) ~[netty-transport-4.1.97.Final.jar:4.1.97.Final]
at net.minecraft.network.Connection$2.write(Connection.java:806) ~[?:?]
at io.netty.channel.AbstractChannelHandlerContext.invokeWrite0(AbstractChannelHandlerContext.java:881) ~[netty-transport-4.1.97.Final.jar:4.1.97
.Final]
at io.netty.channel.AbstractChannelHandlerContext.invokeWriteAndFlush(AbstractChannelHandlerContext.java:940) ~[netty-transport-4.1.97.Final.jar
:4.1.97.Final]
at io.netty.channel.AbstractChannelHandlerContext.write(AbstractChannelHandlerContext.java:966) ~[netty-transport-4.1.97.Final.jar:4.1.97.Final]
at io.netty.channel.AbstractChannelHandlerContext.writeAndFlush(AbstractChannelHandlerContext.java:934) ~[netty-transport-4.1.97.Final.jar:4.1.9
7.Final]
at io.netty.channel.AbstractChannelHandlerContext.writeAndFlush(AbstractChannelHandlerContext.java:984) ~[netty-transport-4.1.97.Final.jar:4.1.9
7.Final]
at io.netty.channel.DefaultChannelPipeline.writeAndFlush(DefaultChannelPipeline.java:1025) ~[netty-transport-4.1.97.Final.jar:4.1.97.Final]
at io.netty.channel.AbstractChannel.writeAndFlush(AbstractChannel.java:306) ~[netty-transport-4.1.97.Final.jar:4.1.97.Final]
at net.minecraft.network.Connection.doSendPacket(Connection.java:531) ~[?:?]
at net.minecraft.network.Connection.lambda$sendPacket$13(Connection.java:516) ~[?:?]
at io.netty.util.concurrent.AbstractEventExecutor.runTask(AbstractEventExecutor.java:174) ~[netty-common-4.1.97.Final.jar:4.1.97.Final]
at io.netty.util.concurrent.AbstractEventExecutor.safeExecute(AbstractEventExecutor.java:167) ~[netty-common-4.1.97.Final.jar:4.1.97.Final]
at io.netty.util.concurrent.SingleThreadEventExecutor.runAllTasks(SingleThreadEventExecutor.java:470) ~[netty-common-4.1.97.Final.jar:4.1.97.Fin
al]
at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:569) ~[netty-transport-4.1.97.Final.jar:4.1.97.Final]
at io.netty.util.concurrent.SingleThreadEventExecutor$4.run(SingleThreadEventExecutor.java:997) ~[netty-common-4.1.97.Final.jar:4.1.97.Final]
at io.netty.util.internal.ThreadExecutorMap$2.run(ThreadExecutorMap.java:74) ~[netty-common-4.1.97.Final.jar:4.1.97.Final]
at java.base/java.lang.Thread.run(Thread.java:1583) ~[?:?]
Caused by: java.lang.NullPointerException: Cannot invoke "java.util.List.iterator()" because "trackedValues" is null
at net.minecraft.network.protocol.game.ClientboundSetEntityDataPacket.pack(ClientboundSetEntityDataPacket.java:22) ~[?:?]
at net.minecraft.network.protocol.game.ClientboundSetEntityDataPacket.write(ClientboundSetEntityDataPacket.java:42) ~[?:?]
at net.minecraft.network.codec.StreamCodec$2.encode(StreamCodec.java:38) ~[folia-1.20.6.jar:1.20.6-DEV-78f49e0]
at net.minecraft.network.codec.StreamCodec$5.encode(StreamCodec.java:88) ~[folia-1.20.6.jar:1.20.6-DEV-78f49e0]
at net.minecraft.network.codec.StreamCodec$5.encode(StreamCodec.java:78) ~[folia-1.20.6.jar:1.20.6-DEV-78f49e0]
... 32 more
Plugin and Datapack List
[21:36:50] [Render thread/INFO]: [System] [CHAT] Server Plugins (18):
[21:36:50] [Render thread/INFO]: [System] [CHAT] Paper Plugins:
[21:36:50] [Render thread/INFO]: [System] [CHAT] - HuskHomes
[21:36:50] [Render thread/INFO]: [System] [CHAT] Bukkit Plugins:
[21:36:50] [Render thread/INFO]: [System] [CHAT] - CMI, CMILib, CoreProtect, DeluxeMenus, floodgate, HuskSync, LuckPerms, PlaceholderAPI, PlayerTitle, PlugManX
[21:36:50] [Render thread/INFO]: [System] [CHAT] Residence, spark, Vault, ViaBackwards, ViaRewind, ViaVersion, XConomy
Actions to reproduce (if known)
CuteLittleSky lost connection: Internal Exception: io.netty.handler.codec.EncoderException: Failed to encode packet 'clientbound/minecr
aft:set_entity_data'
Folia version
This server is running Folia version 1.20.6-DEV-HEAD@78f49e0 (2024-05-24T12:14:20Z) (Implementing API version 1.20.6-R0.1-SNAPSHOT)
Error obtaining version information
Previous version: 1.20.6-DEV-63ef3ce (MC: 1.20.6)
Other
No response
That error is pretty much always down to plugins creating malformed packets