• [Nope] This issue is not solved in a development build

Describe the bug
When ProtocolLib isn't installed the server becomes unjoinable. Version 1.19.3
But I have the same .jar on my SkyBlock server which is also 1.19.3 and it runs fine.
This is the error that occurs (in screenshot)

Screenshots

Version Info
1.19.3 Dev version

Additional context
Without ProtocolLib all server textures are broke due to being unable to use ItemsAdder. If I can get some help with this I would HUGELY appreciate it!

[Errors]

ERROR Packet encoding of packet ID 78 threw (skippable? false)
26.01 16:58:11 [Server] INFO java.lang.ClassCastException: class net.minecraft.network.syncher.DataWatcher$Item cannot be cast to class net.minecraft.network.syncher.DataWatcher$b (net.minecraft.network.syncher.DataWatcher$Item and net.minecraft.network.syncher.DataWatcher$b are in unnamed module of loader java.net.URLClassLoader @200a570f)
26.01 16:58:11 [Server] INFO at net.minecraft.network.protocol.game.ClientboundSetEntityDataPacket.pack(ClientboundSetEntityDataPacket.java:17) ~[?:?]
26.01 16:58:11 [Server] INFO at net.minecraft.network.protocol.game.ClientboundSetEntityDataPacket.write(ClientboundSetEntityDataPacket.java:38) ~[?:?]
26.01 16:58:11 [Server] INFO at net.minecraft.network.PacketEncoder.encode(PacketEncoder.java:41) ~[paper-1.19.3.jar:git-Paper-379]
26.01 16:58:11 [Server] INFO at net.minecraft.network.PacketEncoder.encode(PacketEncoder.java:14) ~[paper-1.19.3.jar:git-Paper-379]
26.01 16:58:11 [Server] INFO at io.netty.handler.codec.MessageToByteEncoder.write(MessageToByteEncoder.java:107) ~[netty-codec-4.1.87.Final.jar:4.1.87.Final]
26.01 16:58:11 [Server] INFO at io.netty.channel.AbstractChannelHandlerContext.invokeWrite0(AbstractChannelHandlerContext.java:881) ~[netty-transport-4.1.87.Final.jar:4.1.87.Final]
26.01 16:58:11 [Server] INFO at io.netty.channel.AbstractChannelHandlerContext.invokeWrite(AbstractChannelHandlerContext.java:863) ~[netty-transport-4.1.87.Final.jar:4.1.87.Final]
26.01 16:58:11 [Server] INFO at io.netty.channel.AbstractChannelHandlerContext.write(AbstractChannelHandlerContext.java:968) ~[netty-transport-4.1.87.Final.jar:4.1.87.Final]
26.01 16:58:11 [Server] INFO at io.netty.channel.AbstractChannelHandlerContext.write(AbstractChannelHandlerContext.java:856) ~[netty-transport-4.1.87.Final.jar:4.1.87.Final]
26.01 16:58:11 [Server] INFO at io.netty.handler.codec.MessageToByteEncoder.write(MessageToByteEncoder.java:120) ~[netty-codec-4.1.87.Final.jar:4.1.87.Final]
26.01 16:58:11 [Server] INFO at io.netty.channel.AbstractChannelHandlerContext.invokeWrite0(AbstractChannelHandlerContext.java:881) ~[netty-transport-4.1.87.Final.jar:4.1.87.Final]
26.01 16:58:11 [Server] INFO at io.netty.channel.AbstractChannelHandlerContext.invokeWrite(AbstractChannelHandlerContext.java:863) ~[netty-transport-4.1.87.Final.jar:4.1.87.Final]
26.01 16:58:11 [Server] INFO at io.netty.channel.AbstractChannelHandlerContext.write(AbstractChannelHandlerContext.java:968) ~[netty-transport-4.1.87.Final.jar:4.1.87.Final]
26.01 16:58:11 [Server] INFO at io.netty.channel.AbstractChannelHandlerContext.write(AbstractChannelHandlerContext.java:856) ~[netty-transport-4.1.87.Final.jar:4.1.87.Final]
26.01 16:58:11 [Server] INFO at io.netty.channel.ChannelDuplexHandler.write(ChannelDuplexHandler.java:115) ~[netty-transport-4.1.87.Final.jar:4.1.87.Final]
26.01 16:58:11 [Server] INFO at de.codingair.tradesystem.lib.codingapi.player.data.PacketReader$1.write(PacketReader.java:86) ~[TradeSystem_v2.2.0.jar:?]
26.01 16:58:11 [Server] INFO at io.netty.channel.AbstractChannelHandlerContext.invokeWrite0(AbstractChannelHandlerContext.java:879) ~[netty-transport-4.1.87.Final.jar:4.1.87.Final]
26.01 16:58:11 [Server] INFO at io.netty.channel.AbstractChannelHandlerContext.invokeWrite(AbstractChannelHandlerContext.java:863) ~[netty-transport-4.1.87.Final.jar:4.1.87.Final]
26.01 16:58:11 [Server] INFO at io.netty.channel.AbstractChannelHandlerContext.write(AbstractChannelHandlerContext.java:968) ~[netty-transport-4.1.87.Final.jar:4.1.87.Final]
26.01 16:58:11 [Server] INFO at io.netty.channel.AbstractChannelHandlerContext.write(AbstractChannelHandlerContext.java:856) ~[netty-transport-4.1.87.Final.jar:4.1.87.Final]
26.01 16:58:11 [Server] INFO at io.netty.channel.ChannelDuplexHandler.write(ChannelDuplexHandler.java:115) ~[netty-transport-4.1.87.Final.jar:4.1.87.Final]
26.01 16:58:11 [Server] INFO at de.codingair.tradesystem.lib.codingapi.player.data.PacketReader$1.write(PacketReader.java:86) ~[TradeSystem_v2.2.0.jar:?]
26.01 16:58:11 [Server] INFO at io.netty.channel.AbstractChannelHandlerContext.invokeWrite0(AbstractChannelHandlerContext.java:879) ~[netty-transport-4.1.87.Final.jar:4.1.87.Final]
26.01 16:58:11 [Server] INFO at io.netty.channel.AbstractChannelHandlerContext.invokeWrite(AbstractChannelHandlerContext.java:863) ~[netty-transport-4.1.87.Final.jar:4.1.87.Final]
26.01 16:58:11 [Server] INFO at io.netty.channel.AbstractChannelHandlerContext.write(AbstractChannelHandlerContext.java:968) ~[netty-transport-4.1.87.Final.jar:4.1.87.Final]
26.01 16:58:11 [Server] INFO at io.netty.channel.AbstractChannelHandlerContext.write(AbstractChannelHandlerContext.java:856) ~[netty-transport-4.1.87.Final.jar:4.1.87.Final]
26.01 16:58:11 [Server] INFO at io.netty.channel.ChannelDuplexHandler.write(ChannelDuplexHandler.java:115) ~[netty-transport-4.1.87.Final.jar:4.1.87.Final]
26.01 16:58:11 [Server] INFO at com.ticxo.modelengine.nms.v1_19_R2.network.ModelEngineChannelHandler.write(ModelEngineChannelHandler.java:71) ~[Model-Engine-R3.1.3.jar:?]
26.01 16:58:11 [Server] INFO at io.netty.channel.AbstractChannelHandlerContext.invokeWrite0(AbstractChannelHandlerContext.java:879) ~[netty-transport-4.1.87.Final.jar:4.1.87.Final]
26.01 16:58:11 [Server] INFO at io.netty.channel.AbstractChannelHandlerContext.invokeWrite(AbstractChannelHandlerContext.java:863) ~[netty-transport-4.1.87.Final.jar:4.1.87.Final]
26.01 16:58:11 [Server] INFO at io.netty.channel.AbstractChannelHandlerContext.write(AbstractChannelHandlerContext.java:968) ~[netty-transport-4.1.87.Final.jar:4.1.87.Final]
26.01 16:58:11 [Server] INFO at io.netty.channel.AbstractChannelHandlerContext.write(AbstractChannelHandlerContext.java:856) ~[netty-transport-4.1.87.Final.jar:4.1.87.Final]
26.01 16:58:11 [Server] INFO at io.netty.channel.ChannelDuplexHandler.write(ChannelDuplexHandler.java:115) ~[netty-transport-4.1.87.Final.jar:4.1.87.Final]
26.01 16:58:11 [Server] INFO at me.neznamy.tab.platforms.bukkit.BukkitPipelineInjector$BukkitChannelDuplexHandler.write(BukkitPipelineInjector.java:93) ~[TAB.v3.2.2.jar:?]
26.01 16:58:11 [Server] INFO at io.netty.channel.AbstractChannelHandlerContext.invokeWrite0(AbstractChannelHandlerContext.java:879) ~[netty-transport-4.1.87.Final.jar:4.1.87.Final]
26.01 16:58:11 [Server] INFO at io.netty.channel.AbstractChannelHandlerContext.invokeWriteAndFlush(AbstractChannelHandlerContext.java:940) ~[netty-transport-4.1.87.Final.jar:4.1.87.Final]
26.01 16:58:11 [Server] INFO at io.netty.channel.AbstractChannelHandlerContext.write(AbstractChannelHandlerContext.java:966) ~[netty-transport-4.1.87.Final.jar:4.1.87.Final]
26.01 16:58:11 [Server] INFO at io.netty.channel.AbstractChannelHandlerContext.writeAndFlush(AbstractChannelHandlerContext.java:934) ~[netty-transport-4.1.87.Final.jar:4.1.87.Final]
26.01 16:58:11 [Server] INFO at io.netty.channel.DefaultChannelPipeline.writeAndFlush(DefaultChannelPipeline.java:1020) ~[netty-transport-4.1.87.Final.jar:4.1.87.Final]
26.01 16:58:11 [Server] INFO at io.netty.channel.AbstractChannel.writeAndFlush(AbstractChannel.java:311) ~[netty-transport-4.1.87.Final.jar:4.1.87.Final]
26.01 16:58:11 [Server] INFO at com.comphenix.protocol.injector.netty.channel.NettyChannelProxy.writeAndFlush(NettyChannelProxy.java:227) ~[ProtocolLib.jar:?]
26.01 16:58:11 [Server] INFO at com.comphenix.protocol.injector.netty.channel.NettyChannelProxy.writeAndFlush(NettyChannelProxy.java:233) ~[ProtocolLib.jar:?]
26.01 16:58:11 [Server] INFO at net.minecraft.network.Connection.doSendPacket(Connection.java:459) ~[?:?]
26.01 16:58:11 [Server] INFO at net.minecraft.network.Connection.lambda$sendPacket$11(Connection.java:433) ~[?:?]
26.01 16:58:11 [Server] INFO at com.comphenix.protocol.injector.netty.channel.NettyEventLoopProxy.lambda$proxyRunnable$2(NettyEventLoopProxy.java:48) ~[ProtocolLib.jar:?]
26.01 16:58:11 [Server] INFO at io.netty.util.concurrent.AbstractEventExecutor.runTask(AbstractEventExecutor.java:174) ~[netty-common-4.1.87.Final.jar:4.1.87.Final]
26.01 16:58:11 [Server] INFO at io.netty.util.concurrent.AbstractEventExecutor.safeExecute(AbstractEventExecutor.java:167) ~[netty-common-4.1.87.Final.jar:4.1.87.Final]
26.01 16:58:11 [Server] INFO at io.netty.util.concurrent.SingleThreadEventExecutor.runAllTasks(SingleThreadEventExecutor.java:470) ~[netty-common-4.1.87.Final.jar:4.1.87.Final]
26.01 16:58:11 [Server] INFO at io.netty.channel.epoll.EpollEventLoop.run(EpollEventLoop.java:403) ~[netty-transport-classes-epoll-4.1.87.Final.jar:4.1.87.Final]
26.01 16:58:11 [Server] INFO at io.netty.util.concurrent.SingleThreadEventExecutor$4.run(SingleThreadEventExecutor.java:997) ~[netty-common-4.1.87.Final.jar:4.1.87.Final]
26.01 16:58:11 [Server] INFO at io.netty.util.internal.ThreadExecutorMap$2.run(ThreadExecutorMap.java:74) ~[netty-common-4.1.87.Final.jar:4.1.87.Final]

@Jeppa I removed all 3 and still get the error, super weird. Any other suggestions?

Just noticed, it could also be TAB... and your TAB version (3.2.2) seems not to be latest release.

Maybe a plugin has not fully updated to latest ProtocolLib...
Try to start the server without Model-Engine or TradeSystem.
Seems to be one of those, that is causing this issue...

Btw. What is the ProtocolLib build?

@Jeppa ProtocolLib is the latest Dev build for 1.19.3

@Jeppa Tried deleting those plugins and still getting the packet 78 error, any other suggestions?

This appears to be the same issue as described in #2125.

This appears to be the same issue as described in #2125.

Yes, and there it seems to be TAB, too...