[X] This issue is not solved in a development build
Upon joining and quitting the server the following error is thrown:
[11:48:23] [Netty Server IO #1/WARN]: [ProtocolLib] Loaded class net.kyori.adventure.text.Component from CoreArena v4.0.7 which is not a depend or softdepend of this plugin.
[11:48:23] [Netty Server IO #1/ERROR]: Error sending packet clientbound/minecraft:disconnect
io.netty.handler.codec.EncoderException: Sending unknown packet 'clientbound/minecraft:disconnect'
at net.minecraft.network.codec.IdDispatchCodec.a(SourceFile:47) ~[spigot-1.21.3-R0.1-SNAPSHOT.jar:4353-Spigot-5eb8a94-18b8ae1]
at net.minecraft.network.codec.IdDispatchCodec.encode(SourceFile:14) ~[spigot-1.21.3-R0.1-SNAPSHOT.jar:4353-Spigot-5eb8a94-18b8ae1]
at net.minecraft.network.PacketEncoder.a(SourceFile:26) ~[spigot-1.21.3-R0.1-SNAPSHOT.jar:4353-Spigot-5eb8a94-18b8ae1]
at net.minecraft.network.PacketEncoder.encode(SourceFile:12) ~[spigot-1.21.3-R0.1-SNAPSHOT.jar:4353-Spigot-5eb8a94-18b8ae1]
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.MessageToByteEncoder.write(MessageToByteEncoder.java:120) ~[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.NetworkManager$2.write(NetworkManager.java:555) ~[spigot-1.21.3-R0.1-SNAPSHOT.jar:4353-Spigot-5eb8a94-18b8ae1]
at io.netty.channel.AbstractChannelHandlerContext.invokeWrite0(AbstractChannelHandlerContext.java:881) ~[netty-transport-4.1.97.Final.jar:4.1.97.Final]
at io.netty.channel.AbstractChannelHandlerContext.invokeWriteAndFlush(AbstractChannelHandlerContext.java:940) ~[netty-transport-4.1.97.Final.jar:4.1.97.Final]
at io.netty.channel.AbstractChannelHandlerContext.write(AbstractChannelHandlerContext.java:966) ~[netty-transport-4.1.97.Final.jar:4.1.97.Final]
at io.netty.channel.AbstractChannelHandlerContext.writeAndFlush(AbstractChannelHandlerContext.java:934) ~[netty-transport-4.1.97.Final.jar:4.1.97.Final]
at io.netty.channel.DefaultChannelPipeline.writeAndFlush(DefaultChannelPipeline.java:1020) ~[netty-transport-4.1.97.Final.jar:4.1.97.Final]
at io.netty.channel.AbstractChannel.writeAndFlush(AbstractChannel.java:311) ~[netty-transport-4.1.97.Final.jar:4.1.97.Final]
at com.comphenix.protocol.injector.netty.channel.NettyChannelProxy.lambda$writeAndFlush$1(NettyChannelProxy.java:223) ~[?:?]
at com.comphenix.protocol.injector.netty.channel.NettyChannelProxy.lambda$processPacketOutbound$2(NettyChannelProxy.java:266) ~[?:?]
at com.comphenix.protocol.injector.netty.channel.NettyChannelProxy.processPacketOutbound(NettyChannelProxy.java:268) ~[?:?]
at com.comphenix.protocol.injector.netty.channel.NettyChannelProxy.writeAndFlush(NettyChannelProxy.java:223) ~[?:?]
at com.comphenix.protocol.injector.netty.channel.NettyChannelProxy.writeAndFlush(NettyChannelProxy.java:233) ~[?:?]
at net.minecraft.network.NetworkManager.c(NetworkManager.java:374) ~[spigot-1.21.3-R0.1-SNAPSHOT.jar:4353-Spigot-5eb8a94-18b8ae1]
at net.minecraft.network.NetworkManager.b(NetworkManager.java:364) ~[spigot-1.21.3-R0.1-SNAPSHOT.jar:4353-Spigot-5eb8a94-18b8ae1]
at net.minecraft.network.NetworkManager.a(NetworkManager.java:342) ~[spigot-1.21.3-R0.1-SNAPSHOT.jar:4353-Spigot-5eb8a94-18b8ae1]
at net.minecraft.network.NetworkManager.a(NetworkManager.java:336) ~[spigot-1.21.3-R0.1-SNAPSHOT.jar:4353-Spigot-5eb8a94-18b8ae1]
at net.minecraft.network.NetworkManager.exceptionCaught(NetworkManager.java:172) ~[spigot-1.21.3-R0.1-SNAPSHOT.jar:4353-Spigot-5eb8a94-18b8ae1]
at io.netty.channel.AbstractChannelHandlerContext.invokeExceptionCaught(AbstractChannelHandlerContext.java:346) ~[netty-transport-4.1.97.Final.jar:4.1.97.Final]
at io.netty.channel.AbstractChannelHandlerContext.invokeExceptionCaught(AbstractChannelHandlerContext.java:325) ~[netty-transport-4.1.97.Final.jar:4.1.97.Final]
at io.netty.channel.AbstractChannelHandlerContext.fireExceptionCaught(AbstractChannelHandlerContext.java:317) ~[netty-transport-4.1.97.Final.jar:4.1.97.Final]
at io.netty.channel.DefaultChannelPipeline$HeadContext.exceptionCaught(DefaultChannelPipeline.java:1377) ~[netty-transport-4.1.97.Final.jar:4.1.97.Final]
at io.netty.channel.AbstractChannelHandlerContext.invokeExceptionCaught(AbstractChannelHandlerContext.java:346) ~[netty-transport-4.1.97.Final.jar:4.1.97.Final]
at io.netty.channel.AbstractChannelHandlerContext.invokeExceptionCaught(AbstractChannelHandlerContext.java:325) ~[netty-transport-4.1.97.Final.jar:4.1.97.Final]
at io.netty.channel.DefaultChannelPipeline.fireExceptionCaught(DefaultChannelPipeline.java:907) ~[netty-transport-4.1.97.Final.jar:4.1.97.Final]
at io.netty.channel.nio.AbstractNioByteChannel$NioByteUnsafe.handleReadException(AbstractNioByteChannel.java:125) ~[netty-transport-4.1.97.Final.jar:4.1.97.Final]
at io.netty.channel.nio.AbstractNioByteChannel$NioByteUnsafe.read(AbstractNioByteChannel.java:177) ~[netty-transport-4.1.97.Final.jar:4.1.97.Final]
at io.netty.channel.nio.NioEventLoop.processSelectedKey(NioEventLoop.java:788) ~[netty-transport-4.1.97.Final.jar:4.1.97.Final]
at io.netty.channel.nio.NioEventLoop.processSelectedKeysOptimized(NioEventLoop.java:724) ~[netty-transport-4.1.97.Final.jar:4.1.97.Final]
at io.netty.channel.nio.NioEventLoop.processSelectedKeys(NioEventLoop.java:650) ~[netty-transport-4.1.97.Final.jar:4.1.97.Final]
at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:562) ~[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) [?:?]
Additional context
The /version output says CraftBukkit version 4353-Spigot-5eb8a94-18b8ae1 (MC: 1.21.3) (Implementing API version 1.21.3-R0.1-SNAPSHOT)
Upon joining and quitting the server the following error is thrown:
Version Info https://pastebin.com/DD77AWi2
Additional context The /version output says CraftBukkit version 4353-Spigot-5eb8a94-18b8ae1 (MC: 1.21.3) (Implementing API version 1.21.3-R0.1-SNAPSHOT)