Player is sometimes kicked

[legdna]

The player is sometimes kicked from the server with this error:

[JDDev0]

Which version of Energized Power are you on?

[JDDev0]

Can you please send me the client and server logs and if possible the item data where the player is kicked? (It must be caused by a Item Conveyor Belt; Drop the item and execute /data get entity @n[type=item])

[legdna]

The version we are using is 2.12.1 for minecraft 1.21.

I found these logs on the server, but nothing on the client :

[22:14:02] [Netty Epoll Server IO #1/ERROR]: Error sending packet clientbound/minecraft:custom_payload
io.netty.handler.codec.EncoderException: Failed to encode packet 'clientbound/minecraft:custom_payload' (energizedpower:item_stack_sync)
        at net.minecraft.class_9136.handler$zlo000$fabric-networking-api-v1$encode(class_9136.java:547) ~[server-intermediary.jar:?]
        at net.minecraft.class_9136.method_56426(class_9136.java:55) ~[server-intermediary.jar:?]
        at net.minecraft.class_9136.encode(class_9136.java:14) ~[server-intermediary.jar:?]
        at net.minecraft.class_2545.method_10838(class_2545.java:26) ~[server-intermediary.jar:?]
        at net.minecraft.class_2545.encode(class_2545.java:12) ~[server-intermediary.jar:?]
        at io.netty.handler.codec.MessageToByteEncoder.write(MessageToByteEncoder.java:107) ~[netty-codec-4.1.97.Final.jar:?]
        at io.netty.channel.AbstractChannelHandlerContext.invokeWrite0(AbstractChannelHandlerContext.java:881) ~[netty-transport-4.1.97.Final.jar:?]
        at io.netty.channel.AbstractChannelHandlerContext.invokeWrite(AbstractChannelHandlerContext.java:863) ~[netty-transport-4.1.97.Final.jar:?]
        at io.netty.channel.AbstractChannelHandlerContext.write(AbstractChannelHandlerContext.java:968) ~[netty-transport-4.1.97.Final.jar:?]
        at io.netty.channel.AbstractChannelHandlerContext.write(AbstractChannelHandlerContext.java:856) ~[netty-transport-4.1.97.Final.jar:?]
        at io.netty.handler.codec.MessageToMessageEncoder.write(MessageToMessageEncoder.java:113) ~[netty-codec-4.1.97.Final.jar:?]
        at io.netty.channel.AbstractChannelHandlerContext.invokeWrite0(AbstractChannelHandlerContext.java:881) ~[netty-transport-4.1.97.Final.jar:?]
        at io.netty.channel.AbstractChannelHandlerContext.invokeWrite(AbstractChannelHandlerContext.java:863) ~[netty-transport-4.1.97.Final.jar:?]
        at io.netty.channel.AbstractChannelHandlerContext.write(AbstractChannelHandlerContext.java:968) ~[netty-transport-4.1.97.Final.jar:?]
        at io.netty.channel.AbstractChannelHandlerContext.write(AbstractChannelHandlerContext.java:856) ~[netty-transport-4.1.97.Final.jar:?]
        at io.netty.channel.ChannelOutboundHandlerAdapter.write(ChannelOutboundHandlerAdapter.java:113) ~[netty-transport-4.1.97.Final.jar:?]
        at net.minecraft.class_2535$2.write(class_2535.java:530) ~[server-intermediary.jar:?]
        at io.netty.channel.AbstractChannelHandlerContext.invokeWrite0(AbstractChannelHandlerContext.java:881) ~[netty-transport-4.1.97.Final.jar:?]
        at io.netty.channel.AbstractChannelHandlerContext.invokeWrite(AbstractChannelHandlerContext.java:863) ~[netty-transport-4.1.97.Final.jar:?]
        at io.netty.channel.AbstractChannelHandlerContext.write(AbstractChannelHandlerContext.java:968) ~[netty-transport-4.1.97.Final.jar:?]
        at io.netty.channel.AbstractChannelHandlerContext.write(AbstractChannelHandlerContext.java:856) ~[netty-transport-4.1.97.Final.jar:?]
        at io.netty.channel.AbstractChannelHandlerContext.write(AbstractChannelHandlerContext.java:851) ~[netty-transport-4.1.97.Final.jar:?]
        at io.netty.channel.DefaultChannelPipeline.write(DefaultChannelPipeline.java:1010) ~[netty-transport-4.1.97.Final.jar:?]
        at io.netty.channel.AbstractChannel.write(AbstractChannel.java:296) ~[netty-transport-4.1.97.Final.jar:?]
        at net.minecraft.class_2535.method_36942(class_2535.java:350) ~[server-intermediary.jar:?]
        at net.minecraft.class_2535.method_52917(class_2535.java:345) ~[server-intermediary.jar:?]
        at io.netty.util.concurrent.AbstractEventExecutor.runTask(AbstractEventExecutor.java:174) ~[netty-common-4.1.97.Final.jar:?]
        at io.netty.util.concurrent.AbstractEventExecutor.safeExecute(AbstractEventExecutor.java:167) ~[netty-common-4.1.97.Final.jar:?]
        at io.netty.util.concurrent.SingleThreadEventExecutor.runAllTasks(SingleThreadEventExecutor.java:470) ~[netty-common-4.1.97.Final.jar:?]
        at io.netty.channel.epoll.EpollEventLoop.run(EpollEventLoop.java:413) ~[netty-transport-classes-epoll-4.1.97.Final.jar:?]
        at io.netty.util.concurrent.SingleThreadEventExecutor$4.run(SingleThreadEventExecutor.java:997) ~[netty-common-4.1.97.Final.jar:?]
        at io.netty.util.internal.ThreadExecutorMap$2.run(ThreadExecutorMap.java:74) ~[netty-common-4.1.97.Final.jar:?]
        at java.base/java.lang.Thread.run(Thread.java:1583) [?:?]
Caused by: java.lang.NullPointerException
[22:14:02] [Server thread/INFO]: legdna lost connection: Internal Exception: io.netty.handler.codec.EncoderException: Failed to encode packet 'clientbound/minecraft:custom_payload' (energizedpower:item_stack_sync)

[legdna]

I don't know what item causes this, all I know is that it happens randomly.

[JDDev0]

Can you send me a list of all mods which are installed on the server?

[JDDev0]

The problem is caused by an Item Conveyor Belt, but I cannot reproduce the bug.

Can you check where Item Conveyor Belts are used on the server and give me any details which can help me to fix the problem.

[JDDev0]

You could also try to update all the mods you are using on the server and on the client and check if the bug is still present.

[legdna]

I've tried updating the mods on both the server and the client but this hasn't solved the problem. I've also updated the fabric loader version to 0.16.0 but the problem persists.

[legdna]

The only items that regularly appear in the conveyor belt are music discs, iron and flowers, as I have an iron farm. There are also potatoes (potato farm) and carrots (carrot farm).

[legdna]

The bug happens randomly, so it can sometimes take over an hour before I'm kicked off the server.

Here's a link to download the modpack to make your search easier:

Modpack

And here's the list of mods on the server:

• Xaero's World Map [1.38.8]
• Iris [1.7.3+mc1.21]
• YetAnotherConfigLib [3.5.0+1.21-fabric]
• Waystones [21.0.8]
• Reinforced Shulker Boxes [3.1.0+1.21]
• Beautify [1.2.1+1.21]
• PolyDecorations [0.4.2+1.21]
• Universal Graves [3.4.3+1.21]
• Architectury [13.0.6]
• BlossomTpa [2.2.4+1.21]
• Polymorph [1.0.4+1.21]
• Just Hammers [21.0.2]
• Xaero's Minimap [24.2.1]
• Reinforced Chests [3.0.1+1.21]
• FancyMenu [3.2.5]
• Balm [21.0.14]
• Fabric Language Kotlin [1.11.0+kotlin.2.0.0]
• Dungeons and Taverns Swamp Hut Overhaul [1-v2]
• Mod Menu [11.0.1]
• Simple Voice Chat Music [0.2.0]
• Dungeons and Taverns Pillager Outpost Overhaul [1-v2.2]
• Collective [7.80]
• Photography [1.0.4+mc1.21]
• Indium [1.0.34+mc1.21]
• Too Many Paintings! [1.0.2-1.21-fabric]
• Roguelike Dungeons [2.0.8-1.21-fabric]
• Dungeons and Taverns Stronghold Rework [1-v2.1]
• BackSlot [1.2.15]
• Sodium [0.5.11+mc1.21]
• Reinforced Barrels [2.5.1+1.21]
• Cloth Config v15 [15.0.128]
• Continuity [3.0.0-beta.5+1.21]
• Polymer [0.9.9+1.21]
• Just Player Heads [4.1]
• Dungeons and Taverns Woodland Mansion Overhaul [1-v1.1]
• FallingTree [1.21.0.6]
• GlitchCore [2.0.0.2]
• EpheroLib [1.2.0-1.20.6]
• Melody [1.0.10]
• Simple Voice Chat [1.21-2.5.19]
• Chisel Refabricated [1.8.1]
• Get Off My Lawn ReServed [1.13.1+1.21]
• Advancement Plaques [1.6.6]
• Nemo's Carpentry [2.5.1-1.21]
• Anvil Never Too Expensive [1.2]
• Forge Config API Port [21.0.7]
• Dungeons and Taverns Ancient City Overhaul [1-v2]
• Dynamic FPS [3.6.3]
• Music Sync [1.3]
• Dungeons and Taverns [1-v4.3]
• Polydex [1.2.3+1.21]
• Universal Shops [1.7.1+1.21]
• Iceberg [1.2.4]
• Fabric API [0.100.8+1.21]
• 3d-Skin-Layers [1.6.6]
• Konkrete [1.9.9]
• Roughly Enough Items [16.0.744]
• TerraBlender [4.0.0.1]
• Factory Blocks Mod [1.3.2]
• Energized Power [1.21-2.12.1-fabric]
• Lithium [0.12.7]
• BiomesOPlenty [21.0.0.11]
• Oracles [1.1.0]
• BlossomLib [2.5.8+1.21]
• Croptopia [3.0.9]