[09:36:43] [Netty Server IO #2/ERROR]: Error receiving packet 82
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 @2530c12)
at net.minecraft.network.protocol.game.PacketPlayOutEntityMetadata.a(SourceFile:21) ~[spigot-1.19.4-R0.1-SNAPSHOT.jar:3763-Spigot-7d7b241-5a5e43e]
at net.minecraft.network.protocol.game.PacketPlayOutEntityMetadata.a(SourceFile:41) ~[spigot-1.19.4-R0.1-SNAPSHOT.jar:3763-Spigot-7d7b241-5a5e43e]
at net.minecraft.network.PacketEncoder.a(SourceFile:45) ~[spigot-1.19.4-R0.1-SNAPSHOT.jar:3763-Spigot-7d7b241-5a5e43e]
at net.minecraft.network.PacketEncoder.encode(SourceFile:14) ~[spigot-1.19.4-R0.1-SNAPSHOT.jar:3763-Spigot-7d7b241-5a5e43e]
at io.netty.handler.codec.MessageToByteEncoder.write(MessageToByteEncoder.java:107) ~[netty-codec-4.1.82.Final.jar:4.1.82.Final]
at io.netty.channel.AbstractChannelHandlerContext.invokeWrite0(AbstractChannelHandlerContext.java:717) ~[netty-transport-4.1.82.Final.jar:4.1.82.Final]
at io.netty.channel.AbstractChannelHandlerContext.invokeWrite(AbstractChannelHandlerContext.java:709) ~[netty-transport-4.1.82.Final.jar:4.1.82.Final]
at io.netty.channel.AbstractChannelHandlerContext.write(AbstractChannelHandlerContext.java:792) ~[netty-transport-4.1.82.Final.jar:4.1.82.Final]
at io.netty.channel.AbstractChannelHandlerContext.write(AbstractChannelHandlerContext.java:702) ~[netty-transport-4.1.82.Final.jar:4.1.82.Final]
at io.netty.handler.codec.MessageToByteEncoder.write(MessageToByteEncoder.java:120) ~[netty-codec-4.1.82.Final.jar:4.1.82.Final]
at io.netty.channel.AbstractChannelHandlerContext.invokeWrite0(AbstractChannelHandlerContext.java:717) ~[netty-transport-4.1.82.Final.jar:4.1.82.Final]
at io.netty.channel.AbstractChannelHandlerContext.invokeWrite(AbstractChannelHandlerContext.java:709) ~[netty-transport-4.1.82.Final.jar:4.1.82.Final]
at io.netty.channel.AbstractChannelHandlerContext.write(AbstractChannelHandlerContext.java:792) ~[netty-transport-4.1.82.Final.jar:4.1.82.Final]
at io.netty.channel.AbstractChannelHandlerContext.write(AbstractChannelHandlerContext.java:702) ~[netty-transport-4.1.82.Final.jar:4.1.82.Final]
at io.netty.handler.codec.MessageToMessageEncoder.write(MessageToMessageEncoder.java:113) ~[netty-codec-4.1.82.Final.jar:4.1.82.Final]
at io.netty.channel.AbstractChannelHandlerContext.invokeWrite0(AbstractChannelHandlerContext.java:717) ~[netty-transport-4.1.82.Final.jar:4.1.82.Final]
at io.netty.channel.AbstractChannelHandlerContext.invokeWriteAndFlush(AbstractChannelHandlerContext.java:764) ~[netty-transport-4.1.82.Final.jar:4.1.82.Final]
at io.netty.channel.AbstractChannelHandlerContext.write(AbstractChannelHandlerContext.java:790) ~[netty-transport-4.1.82.Final.jar:4.1.82.Final]
at io.netty.channel.AbstractChannelHandlerContext.writeAndFlush(AbstractChannelHandlerContext.java:758) ~[netty-transport-4.1.82.Final.jar:4.1.82.Final]
at io.netty.channel.DefaultChannelPipeline.writeAndFlush(DefaultChannelPipeline.java:1020) ~[netty-transport-4.1.82.Final.jar:4.1.82.Final]
at io.netty.channel.AbstractChannel.writeAndFlush(AbstractChannel.java:311) ~[netty-transport-4.1.82.Final.jar:4.1.82.Final]
at com.comphenix.protocol.injector.netty.channel.NettyChannelProxy.writeAndFlush(NettyChannelProxy.java:227) ~[?:?]
at com.comphenix.protocol.injector.netty.channel.NettyChannelProxy.writeAndFlush(NettyChannelProxy.java:233) ~[?:?]
at net.minecraft.network.NetworkManager.a(NetworkManager.java:231) ~[spigot-1.19.4-R0.1-SNAPSHOT.jar:3763-Spigot-7d7b241-5a5e43e]
at net.minecraft.network.NetworkManager.lambda$7(NetworkManager.java:220) ~[spigot-1.19.4-R0.1-SNAPSHOT.jar:3763-Spigot-7d7b241-5a5e43e]
at com.comphenix.protocol.injector.netty.channel.NettyEventLoopProxy.lambda$proxyRunnable$2(NettyEventLoopProxy.java:48) ~[?:?]
at io.netty.util.concurrent.AbstractEventExecutor.runTask(AbstractEventExecutor.java:174) ~[netty-common-4.1.82.Final.jar:4.1.82.Final]
at io.netty.util.concurrent.AbstractEventExecutor.safeExecute(AbstractEventExecutor.java:167) ~[netty-common-4.1.82.Final.jar:4.1.82.Final]
at io.netty.util.concurrent.SingleThreadEventExecutor.runAllTasks(SingleThreadEventExecutor.java:470) ~[netty-common-4.1.82.Final.jar:4.1.82.Final]
at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:569) ~[netty-transport-4.1.82.Final.jar:4.1.82.Final] at io.netty.util.concurrent.SingleThreadEventExecutor$4.run(SingleThreadEventExecutor.java:997) ~[netty-common-4.1.82.Final.jar:4.1.82.Final]
at io.netty.util.internal.ThreadExecutorMap$2.run(ThreadExecutorMap.java:74) ~[netty-common-4.1.82.Final.jar:4.1.82.Final]
at java.lang.Thread.run(Thread.java:833) ~[?:?]
gives this