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1.12 Custom Packets


PlanetTeamSpeak

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I have made a custom packet using Forge's SimpleImpl packet system which is supposed to send a packet from the server to the client, but nothing seems to be happening. Am I doing something wrong?

SPacketRegisterFakePlayer.java:

package com.ptsmods.morecommands.miscellaneous;

import java.nio.charset.Charset;
import java.util.UUID;

import com.ptsmods.morecommands.miscellaneous.Reference.LogType;

import io.netty.buffer.ByteBuf;
import net.minecraft.entity.player.EntityPlayerMP;
import net.minecraftforge.fml.common.FMLCommonHandler;
import net.minecraftforge.fml.common.network.simpleimpl.IMessage;
import net.minecraftforge.fml.common.network.simpleimpl.IMessageHandler;
import net.minecraftforge.fml.common.network.simpleimpl.MessageContext;

public class SPacketRegisterFakePlayer implements IMessage {

	private EntityPlayerMP player;

	public SPacketRegisterFakePlayer() {

	}

	public SPacketRegisterFakePlayer(EntityPlayerMP player) {
		this.player = player;
	}

	@Override
	public void fromBytes(ByteBuf buf) {
		UUID id = UUID.fromString(buf.readCharSequence(buf.readableBytes(), Charset.defaultCharset()).toString());
		Reference.print(LogType.INFO, "Reading packet data.", id.toString());
		try {
			player = FMLCommonHandler.instance().getMinecraftServerInstance().getPlayerList().getPlayerByUUID(id);
		} catch (Throwable e) {
			e.printStackTrace();
			return;
		}
	}

	@Override
	public void toBytes(ByteBuf buf) {
		Reference.print(LogType.INFO, "Writing packet data.");
		buf.writeCharSequence(player.getUniqueID().toString(), Charset.defaultCharset());
	}

	public EntityPlayerMP getPlayer() {
		return player;
	}

	public static class Handler implements IMessageHandler<SPacketRegisterFakePlayer, IMessage> {

		@Override
		public IMessage onMessage(SPacketRegisterFakePlayer message, MessageContext ctx) {
			Reference.print(LogType.INFO, "Processing packet data.");
			EntityPlayerMP player = message.getPlayer();
			Reference.fakePlayers.add(player);
			return null;
		}
	}

}

PacketDispatcher.java:

package com.ptsmods.morecommands.miscellaneous;

import net.minecraft.entity.player.EntityPlayerMP;
import net.minecraftforge.fml.common.network.NetworkRegistry;
import net.minecraftforge.fml.common.network.NetworkRegistry.TargetPoint;
import net.minecraftforge.fml.common.network.simpleimpl.IMessage;
import net.minecraftforge.fml.common.network.simpleimpl.SimpleNetworkWrapper;
import net.minecraftforge.fml.relauncher.Side;
import net.minecraftforge.fml.relauncher.SideOnly;

public class PacketDispatcher {
	private static final SimpleNetworkWrapper DISPATCHER = NetworkRegistry.INSTANCE.newSimpleChannel(Reference.MOD_ID);

	public static void registerPackets() {
		DISPATCHER.registerMessage(SPacketRegisterFakePlayer.Handler.class, SPacketRegisterFakePlayer.class, 0, Side.CLIENT);
	}

	public static void sendTo(IMessage message, EntityPlayerMP player) {
		DISPATCHER.sendTo(message, player);
	}

	public static void sendToAll(IMessage message) {
		DISPATCHER.sendToAll(message);
	}

	public static void sendToAllAround(IMessage message, TargetPoint targetPoint) {
		DISPATCHER.sendToAllAround(message, targetPoint);
	}

	public static void sendToDimension(IMessage message, int dim) {
		DISPATCHER.sendToDimension(message, dim);
	}

	@SideOnly(Side.CLIENT)
	public static void sendToServer(IMessage message) {
		DISPATCHER.sendToServer(message);
	}

}

 

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In a command.

fakeplayer.java

package com.ptsmods.morecommands.commands;

import java.util.ArrayList;
import java.util.UUID;

import com.mojang.authlib.GameProfile;
import com.mojang.util.UUIDTypeAdapter;
import com.ptsmods.morecommands.miscellaneous.CommandType;
import com.ptsmods.morecommands.miscellaneous.PacketDispatcher;
import com.ptsmods.morecommands.miscellaneous.Permission;
import com.ptsmods.morecommands.miscellaneous.Reference;
import com.ptsmods.morecommands.miscellaneous.SPacketRegisterFakePlayer;

import net.minecraft.command.ICommandSender;
import net.minecraft.entity.player.EntityPlayer;
import net.minecraft.entity.player.EntityPlayerMP;
import net.minecraft.network.EnumPacketDirection;
import net.minecraft.network.NetHandlerPlayServer;
import net.minecraft.network.NetworkManager;
import net.minecraft.server.MinecraftServer;
import net.minecraft.server.management.PlayerInteractionManager;
import net.minecraft.util.math.BlockPos;
import net.minecraft.world.GameType;

public class fakePlayer {

	public fakePlayer() {
	}

	public static class CommandfakePlayer extends com.ptsmods.morecommands.miscellaneous.CommandBase {

		@Override
		public java.util.List getAliases() {
			ArrayList aliases = new ArrayList();
			return aliases;
		}

		@Override
		public java.util.List getTabCompletions(MinecraftServer server, ICommandSender sender, String[] args, BlockPos pos) {
			return new ArrayList();
		}

		@Override
		public String getName() {
			return "fakeplayer";
		}

		@Override
		public String getUsage(ICommandSender sender) {
			return usage;
		}

		@Override
		public void execute(MinecraftServer server, ICommandSender sender, String[] args) {
			if (args.length != 0) {
				if (args[0].length() > 16) Reference.sendMessage(sender, "The name has to be 16 characters at most.");
				else {
					Reference.sendMessage(sender, "Creating the fake player, please stand still, this will only take a few seconds.");
					EntityPlayer player = (EntityPlayer) sender;
					String uuid = Reference.getUUIDFromName(args[0]);
					GameProfile profile = new GameProfile(uuid == null ? UUID.randomUUID() : UUIDTypeAdapter.fromString(uuid), args[0]);
					EntityPlayerMP fakePlayer = new EntityPlayerMP(server, server.getWorld(player.dimension), profile, new PlayerInteractionManager(player.world));
					NetworkManager netManager = new NetworkManager(EnumPacketDirection.CLIENTBOUND);
					server.getPlayerList().initializeConnectionToPlayer(netManager, fakePlayer, new NetHandlerPlayServer(server, netManager, fakePlayer));
					Reference.fakePlayers.add(fakePlayer);
					for (EntityPlayerMP player1 : server.getPlayerList().getPlayers())
						if (!Reference.fakePlayers.contains(player1)) PacketDispatcher.sendTo(new SPacketRegisterFakePlayer(fakePlayer), player1);
					fakePlayer.setPositionAndRotation(0, 0, 0, player.rotationYaw, player.rotationPitch);
					fakePlayer.setPositionAndUpdate(player.posX, player.posY, player.posZ);
					fakePlayer.setGameType(GameType.CREATIVE);
					Reference.sendMessage(sender, "The player " + fakePlayer.getName() + " has been made with the UUID " + fakePlayer.getUniqueID().toString() + ".");
				}
			} else Reference.sendCommandUsage(sender, usage);
		}

		@Override
		public CommandType getCommandType() {
			return CommandType.SERVER;
		}

		@Override
		public Permission getPermission() {
			return new Permission(Reference.MOD_ID, "fakeplayer", "Permission to use the fakeplayer command.", true);
		}

		private String usage = "/fakeplayer <name> Creates a fake player.";

	}

}

 

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Alright, I got the message to be sent to the client now, but it crashes and gives me an error. Any ideas on why?

Stacktrace:

[15:52:49] [Netty Local Client IO #1/ERROR] [FML]: FMLIndexedMessageCodec exception caught
io.netty.handler.codec.DecoderException: java.lang.NullPointerException: Undefined message for discriminator 0 in channel morecommands
	at io.netty.handler.codec.MessageToMessageDecoder.channelRead(MessageToMessageDecoder.java:98) ~[MessageToMessageDecoder.class:4.1.9.Final]
	at io.netty.handler.codec.MessageToMessageCodec.channelRead(MessageToMessageCodec.java:111) ~[MessageToMessageCodec.class:4.1.9.Final]
	at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:362) [AbstractChannelHandlerContext.class:4.1.9.Final]
	at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:348) [AbstractChannelHandlerContext.class:4.1.9.Final]
	at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:340) [AbstractChannelHandlerContext.class:4.1.9.Final]
	at io.netty.channel.DefaultChannelPipeline$HeadContext.channelRead(DefaultChannelPipeline.java:1334) [DefaultChannelPipeline$HeadContext.class:4.1.9.Final]
	at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:362) [AbstractChannelHandlerContext.class:4.1.9.Final]
	at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:348) [AbstractChannelHandlerContext.class:4.1.9.Final]
	at io.netty.channel.DefaultChannelPipeline.fireChannelRead(DefaultChannelPipeline.java:926) [DefaultChannelPipeline.class:4.1.9.Final]
	at io.netty.channel.embedded.EmbeddedChannel.writeInbound(EmbeddedChannel.java:274) [EmbeddedChannel.class:4.1.9.Final]
	at net.minecraftforge.fml.common.network.internal.FMLProxyPacket.processPacket(FMLProxyPacket.java:108) [FMLProxyPacket.class:?]
	at net.minecraft.network.NetworkManager.channelRead0(NetworkManager.java:155) [NetworkManager.class:?]
	at net.minecraft.network.NetworkManager.channelRead0(NetworkManager.java:49) [NetworkManager.class:?]
	at io.netty.channel.SimpleChannelInboundHandler.channelRead(SimpleChannelInboundHandler.java:105) [SimpleChannelInboundHandler.class:4.1.9.Final]
	at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:362) [AbstractChannelHandlerContext.class:4.1.9.Final]
	at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:348) [AbstractChannelHandlerContext.class:4.1.9.Final]
	at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:340) [AbstractChannelHandlerContext.class:4.1.9.Final]
	at net.minecraftforge.fml.common.network.handshake.NetworkDispatcher.handleClientSideCustomPacket(NetworkDispatcher.java:409) [NetworkDispatcher.class:?]
	at net.minecraftforge.fml.common.network.handshake.NetworkDispatcher.channelRead0(NetworkDispatcher.java:274) [NetworkDispatcher.class:?]
	at net.minecraftforge.fml.common.network.handshake.NetworkDispatcher.channelRead0(NetworkDispatcher.java:74) [NetworkDispatcher.class:?]
	at io.netty.channel.SimpleChannelInboundHandler.channelRead(SimpleChannelInboundHandler.java:105) [SimpleChannelInboundHandler.class:4.1.9.Final]
	at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:362) [AbstractChannelHandlerContext.class:4.1.9.Final]
	at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:348) [AbstractChannelHandlerContext.class:4.1.9.Final]
	at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:340) [AbstractChannelHandlerContext.class:4.1.9.Final]
	at io.netty.channel.DefaultChannelPipeline$HeadContext.channelRead(DefaultChannelPipeline.java:1334) [DefaultChannelPipeline$HeadContext.class:4.1.9.Final]
	at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:362) [AbstractChannelHandlerContext.class:4.1.9.Final]
	at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:348) [AbstractChannelHandlerContext.class:4.1.9.Final]
	at io.netty.channel.DefaultChannelPipeline.fireChannelRead(DefaultChannelPipeline.java:926) [DefaultChannelPipeline.class:4.1.9.Final]
	at io.netty.channel.local.LocalChannel.finishPeerRead0(LocalChannel.java:443) [LocalChannel.class:4.1.9.Final]
	at io.netty.channel.local.LocalChannel.access$500(LocalChannel.java:49) [LocalChannel.class:4.1.9.Final]
	at io.netty.channel.local.LocalChannel$5.run(LocalChannel.java:397) [LocalChannel$5.class:4.1.9.Final]
	at io.netty.channel.DefaultEventLoop.run(DefaultEventLoop.java:54) [DefaultEventLoop.class:4.1.9.Final]
	at io.netty.util.concurrent.SingleThreadEventExecutor$5.run(SingleThreadEventExecutor.java:858) [SingleThreadEventExecutor$5.class:4.1.9.Final]
	at java.lang.Thread.run(Unknown Source) [?:1.8.0_144]
Caused by: java.lang.NullPointerException: Undefined message for discriminator 0 in channel morecommands
	at net.minecraftforge.fml.common.network.FMLIndexedMessageToMessageCodec.decode(FMLIndexedMessageToMessageCodec.java:99) ~[FMLIndexedMessageToMessageCodec.class:?]
	at net.minecraftforge.fml.common.network.FMLIndexedMessageToMessageCodec.decode(FMLIndexedMessageToMessageCodec.java:40) ~[FMLIndexedMessageToMessageCodec.class:?]
	at io.netty.handler.codec.MessageToMessageCodec$2.decode(MessageToMessageCodec.java:81) ~[MessageToMessageCodec$2.class:4.1.9.Final]
	at io.netty.handler.codec.MessageToMessageDecoder.channelRead(MessageToMessageDecoder.java:88) ~[MessageToMessageDecoder.class:4.1.9.Final]
	... 33 more
[15:52:50] [Netty Local Client IO #1/ERROR] [FML]: There was a critical exception handling a packet on channel morecommands
io.netty.handler.codec.DecoderException: java.lang.NullPointerException: Undefined message for discriminator 0 in channel morecommands
	at io.netty.handler.codec.MessageToMessageDecoder.channelRead(MessageToMessageDecoder.java:98) ~[MessageToMessageDecoder.class:4.1.9.Final]
	at io.netty.handler.codec.MessageToMessageCodec.channelRead(MessageToMessageCodec.java:111) ~[MessageToMessageCodec.class:4.1.9.Final]
	at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:362) ~[AbstractChannelHandlerContext.class:4.1.9.Final]
	at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:348) ~[AbstractChannelHandlerContext.class:4.1.9.Final]
	at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:340) ~[AbstractChannelHandlerContext.class:4.1.9.Final]
	at io.netty.channel.DefaultChannelPipeline$HeadContext.channelRead(DefaultChannelPipeline.java:1334) ~[DefaultChannelPipeline$HeadContext.class:4.1.9.Final]
	at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:362) ~[AbstractChannelHandlerContext.class:4.1.9.Final]
	at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:348) ~[AbstractChannelHandlerContext.class:4.1.9.Final]
	at io.netty.channel.DefaultChannelPipeline.fireChannelRead(DefaultChannelPipeline.java:926) ~[DefaultChannelPipeline.class:4.1.9.Final]
	at io.netty.channel.embedded.EmbeddedChannel.writeInbound(EmbeddedChannel.java:274) ~[EmbeddedChannel.class:4.1.9.Final]
	at net.minecraftforge.fml.common.network.internal.FMLProxyPacket.processPacket(FMLProxyPacket.java:108) [FMLProxyPacket.class:?]
	at net.minecraft.network.NetworkManager.channelRead0(NetworkManager.java:155) [NetworkManager.class:?]
	at net.minecraft.network.NetworkManager.channelRead0(NetworkManager.java:49) [NetworkManager.class:?]
	at io.netty.channel.SimpleChannelInboundHandler.channelRead(SimpleChannelInboundHandler.java:105) [SimpleChannelInboundHandler.class:4.1.9.Final]
	at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:362) [AbstractChannelHandlerContext.class:4.1.9.Final]
	at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:348) [AbstractChannelHandlerContext.class:4.1.9.Final]
	at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:340) [AbstractChannelHandlerContext.class:4.1.9.Final]
	at net.minecraftforge.fml.common.network.handshake.NetworkDispatcher.handleClientSideCustomPacket(NetworkDispatcher.java:409) [NetworkDispatcher.class:?]
	at net.minecraftforge.fml.common.network.handshake.NetworkDispatcher.channelRead0(NetworkDispatcher.java:274) [NetworkDispatcher.class:?]
	at net.minecraftforge.fml.common.network.handshake.NetworkDispatcher.channelRead0(NetworkDispatcher.java:74) [NetworkDispatcher.class:?]
	at io.netty.channel.SimpleChannelInboundHandler.channelRead(SimpleChannelInboundHandler.java:105) [SimpleChannelInboundHandler.class:4.1.9.Final]
	at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:362) [AbstractChannelHandlerContext.class:4.1.9.Final]
	at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:348) [AbstractChannelHandlerContext.class:4.1.9.Final]
	at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:340) [AbstractChannelHandlerContext.class:4.1.9.Final]
	at io.netty.channel.DefaultChannelPipeline$HeadContext.channelRead(DefaultChannelPipeline.java:1334) [DefaultChannelPipeline$HeadContext.class:4.1.9.Final]
	at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:362) [AbstractChannelHandlerContext.class:4.1.9.Final]
	at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:348) [AbstractChannelHandlerContext.class:4.1.9.Final]
	at io.netty.channel.DefaultChannelPipeline.fireChannelRead(DefaultChannelPipeline.java:926) [DefaultChannelPipeline.class:4.1.9.Final]
	at io.netty.channel.local.LocalChannel.finishPeerRead0(LocalChannel.java:443) [LocalChannel.class:4.1.9.Final]
	at io.netty.channel.local.LocalChannel.access$500(LocalChannel.java:49) [LocalChannel.class:4.1.9.Final]
	at io.netty.channel.local.LocalChannel$5.run(LocalChannel.java:397) [LocalChannel$5.class:4.1.9.Final]
	at io.netty.channel.DefaultEventLoop.run(DefaultEventLoop.java:54) [DefaultEventLoop.class:4.1.9.Final]
	at io.netty.util.concurrent.SingleThreadEventExecutor$5.run(SingleThreadEventExecutor.java:858) [SingleThreadEventExecutor$5.class:4.1.9.Final]
	at java.lang.Thread.run(Unknown Source) [?:1.8.0_144]
Caused by: java.lang.NullPointerException: Undefined message for discriminator 0 in channel morecommands
	at net.minecraftforge.fml.common.network.FMLIndexedMessageToMessageCodec.decode(FMLIndexedMessageToMessageCodec.java:99) ~[FMLIndexedMessageToMessageCodec.class:?]
	at net.minecraftforge.fml.common.network.FMLIndexedMessageToMessageCodec.decode(FMLIndexedMessageToMessageCodec.java:40) ~[FMLIndexedMessageToMessageCodec.class:?]
	at io.netty.handler.codec.MessageToMessageCodec$2.decode(MessageToMessageCodec.java:81) ~[MessageToMessageCodec$2.class:4.1.9.Final]
	at io.netty.handler.codec.MessageToMessageDecoder.channelRead(MessageToMessageDecoder.java:88) ~[MessageToMessageDecoder.class:4.1.9.Final]
	... 33 more
[15:52:50] [Netty Local Client IO #1/ERROR] [FML]: Network Disconnect: A fatal error has occurred, this connection is terminated

SPacketRegisterFakePlayer.java:

package com.ptsmods.morecommands.miscellaneous;

import java.nio.charset.Charset;
import java.util.UUID;

import com.ptsmods.morecommands.miscellaneous.Reference.LogType;

import io.netty.buffer.ByteBuf;
import net.minecraft.entity.player.EntityPlayerMP;
import net.minecraftforge.fml.common.FMLCommonHandler;
import net.minecraftforge.fml.common.network.simpleimpl.IMessage;
import net.minecraftforge.fml.common.network.simpleimpl.IMessageHandler;
import net.minecraftforge.fml.common.network.simpleimpl.MessageContext;

public class SPacketRegisterFakePlayer implements IMessage {

	private EntityPlayerMP player;

	public SPacketRegisterFakePlayer() {

	}

	public SPacketRegisterFakePlayer(EntityPlayerMP player) {
		this.player = player;
	}

	@Override
	public void fromBytes(ByteBuf buf) {
		UUID id = UUID.fromString(buf.readCharSequence(buf.readableBytes(), Charset.defaultCharset()).toString());
		Reference.print(LogType.INFO, "Reading packet data.", id.toString());
		try {
			player = FMLCommonHandler.instance().getMinecraftServerInstance().getPlayerList().getPlayerByUUID(id);
		} catch (Throwable e) {
			e.printStackTrace();
			return;
		}
	}

	@Override
	public void toBytes(ByteBuf buf) {
		Reference.print(LogType.INFO, "Writing packet data.");
		buf.writeCharSequence(player.getUniqueID().toString(), Charset.defaultCharset());
	}

	public EntityPlayerMP getPlayer() {
		return player;
	}

	public static class Handler implements IMessageHandler<SPacketRegisterFakePlayer, IMessage> {

		@Override
		public IMessage onMessage(SPacketRegisterFakePlayer message, MessageContext ctx) {
			Reference.print(LogType.INFO, "Processing packet data.");
			EntityPlayerMP player = message.getPlayer();
			Reference.fakePlayers.add(player);
			return null;
		}
	}

}

 

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Time: 3/28/24 12:17 PM Description: Exception in server tick loop net.minecraftforge.fml.common.LoaderException: java.lang.NoClassDefFoundError: net/minecraft/client/multiplayer/WorldClient     at net.minecraftforge.fml.common.AutomaticEventSubscriber.inject(AutomaticEventSubscriber.java:89)     at net.minecraftforge.fml.common.FMLModContainer.constructMod(FMLModContainer.java:612)     at sun.reflect.GeneratedMethodAccessor10.invoke(Unknown Source)     at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)     at java.lang.reflect.Method.invoke(Method.java:498)     at com.google.common.eventbus.Subscriber.invokeSubscriberMethod(Subscriber.java:91)     at com.google.common.eventbus.Subscriber$SynchronizedSubscriber.invokeSubscriberMethod(Subscriber.java:150)     at com.google.common.eventbus.Subscriber$1.run(Subscriber.java:76)     at com.google.common.util.concurrent.MoreExecutors$DirectExecutor.execute(MoreExecutors.java:399)     at com.google.common.eventbus.Subscriber.dispatchEvent(Subscriber.java:71)     at com.google.common.eventbus.Dispatcher$PerThreadQueuedDispatcher.dispatch(Dispatcher.java:116)     at com.google.common.eventbus.EventBus.post(EventBus.java:217)     at net.minecraftforge.fml.common.LoadController.sendEventToModContainer(LoadController.java:219)     at net.minecraftforge.fml.common.LoadController.propogateStateMessage(LoadController.java:197)     at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)     at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)     at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)     at java.lang.reflect.Method.invoke(Method.java:498)     at com.google.common.eventbus.Subscriber.invokeSubscriberMethod(Subscriber.java:91)     at com.google.common.eventbus.Subscriber$SynchronizedSubscriber.invokeSubscriberMethod(Subscriber.java:150)     at com.google.common.eventbus.Subscriber$1.run(Subscriber.java:76)     at com.google.common.util.concurrent.MoreExecutors$DirectExecutor.execute(MoreExecutors.java:399)     at com.google.common.eventbus.Subscriber.dispatchEvent(Subscriber.java:71)     at com.google.common.eventbus.Dispatcher$PerThreadQueuedDispatcher.dispatch(Dispatcher.java:116)     at com.google.common.eventbus.EventBus.post(EventBus.java:217)     at net.minecraftforge.fml.common.LoadController.distributeStateMessage(LoadController.java:136)     at net.minecraftforge.fml.common.Loader.loadMods(Loader.java:595)     at net.minecraftforge.fml.server.FMLServerHandler.beginServerLoading(FMLServerHandler.java:98)     at net.minecraftforge.fml.common.FMLCommonHandler.onServerStart(FMLCommonHandler.java:333)     at net.minecraft.server.dedicated.DedicatedServer.func_71197_b(DedicatedServer.java:125)     at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:486)     at java.lang.Thread.run(Thread.java:750) Caused by: java.lang.NoClassDefFoundError: net/minecraft/client/multiplayer/WorldClient     at java.lang.Class.getDeclaredMethods0(Native Method)     at java.lang.Class.privateGetDeclaredMethods(Class.java:2701)     at java.lang.Class.privateGetPublicMethods(Class.java:2902)     at java.lang.Class.getMethods(Class.java:1615)     at net.minecraftforge.fml.common.eventhandler.EventBus.register(EventBus.java:82)     at net.minecraftforge.fml.common.AutomaticEventSubscriber.inject(AutomaticEventSubscriber.java:82)     ... 31 more Caused by: java.lang.ClassNotFoundException: net.minecraft.client.multiplayer.WorldClient     at net.minecraft.launchwrapper.LaunchClassLoader.findClass(LaunchClassLoader.java:191)     at java.lang.ClassLoader.loadClass(ClassLoader.java:418)     at java.lang.ClassLoader.loadClass(ClassLoader.java:351)     ... 37 more Caused by: net.minecraftforge.fml.common.asm.ASMTransformerWrapper$TransformerException: Exception in class transformer net.minecraftforge.fml.common.asm.transformers.SideTransformer@4e558728 from coremod FMLCorePlugin     at net.minecraftforge.fml.common.asm.ASMTransformerWrapper$TransformerWrapper.transform(ASMTransformerWrapper.java:260)     at net.minecraft.launchwrapper.LaunchClassLoader.runTransformers(LaunchClassLoader.java:279)     at net.minecraft.launchwrapper.LaunchClassLoader.findClass(LaunchClassLoader.java:176)     ... 39 more Caused by: java.lang.RuntimeException: Attempted to load class bsb for invalid side SERVER     at net.minecraftforge.fml.common.asm.transformers.SideTransformer.transform(SideTransformer.java:62)     at net.minecraftforge.fml.common.asm.ASMTransformerWrapper$TransformerWrapper.transform(ASMTransformerWrapper.java:256)     ... 41 more A detailed walkthrough of the error, its code path and all known details is as follows: --------------------------------------------------------------------------------------- -- System Details -- Details:     Minecraft Version: 1.12.2     Operating System: Linux (amd64) version 5.10.0-28-cloud-amd64     Java Version: 1.8.0_382, Temurin     Java VM Version: OpenJDK 64-Bit Server VM (mixed mode), Temurin     Memory: 948745536 bytes (904 MB) / 1564999680 bytes (1492 MB) up to 7635730432 bytes (7282 MB)     JVM Flags: 2 total; -Xmx8192M -Xms256M     IntCache: cache: 0, tcache: 0, allocated: 0, tallocated: 0     FML: MCP 9.42 Powered by Forge 14.23.5.2860 63 mods loaded, 63 mods active     States: 'U' = Unloaded 'L' = Loaded 'C' = Constructed 'H' = Pre-initialized 'I' = Initialized 'J' = Post-initialized 'A' = Available 'D' = Disabled 'E' = Errored     | State | ID                 | Version                 | Source                                                | Signature                                |     |:----- |:------------------ |:----------------------- |:----------------------------------------------------- |:---------------------------------------- |     | LC    | minecraft          | 1.12.2                  | minecraft.jar                                         | None                                     |     | LC    | mcp                | 9.42                    | minecraft.jar                                         | None                                     |     | LC    | FML                | 8.0.99.99               | forge-1.12.2-14.23.5.2860.jar                         | e3c3d50c7c986df74c645c0ac54639741c90a557 |     | LC    | forge              | 14.23.5.2860            | forge-1.12.2-14.23.5.2860.jar                         | e3c3d50c7c986df74c645c0ac54639741c90a557 |     | LC    | creativecoredummy  | 1.0.0                   | minecraft.jar                                         | None                                     |     | LC    | backpacked         | 1.4.2                   | backpacked-1.4.3-1.12.2.jar                           | None                                     |     | LC    | itemblacklist      | 1.4.3                   | ItemBlacklist-1.4.3.jar                               | None                                     |     | LC    | securitycraft      | v1.9.8                  | [1.12.2] SecurityCraft v1.9.8.jar                     | None                                     |     | LC    | aiimprovements     | 0.0.1.3                 | AIImprovements-1.12-0.0.1b3.jar                       | None                                     |     | LC    | jei                | 4.16.1.301              | jei_1.12.2-4.16.1.301.jar                             | None                                     |     | LC    | appleskin          | 1.0.14                  | AppleSkin-mc1.12-1.0.14.jar                           | None                                     |     | LC    | baubles            | 1.5.2                   | Baubles-1.12-1.5.2.jar                                | None                                     |     | LC    | astralsorcery      | 1.10.27                 | astralsorcery-1.12.2-1.10.27.jar                      | a0f0b759d895c15ceb3e3bcb5f3c2db7c582edf0 |     | LC    | attributefix       | 1.0.12                  | AttributeFix-Forge-1.12.2-1.0.12.jar                  | None                                     |     | LC    | atum               | 2.0.20                  | Atum-1.12.2-2.0.20.jar                                | None                                     |     | LC    | bloodmoon          | 1.5.3                   | Bloodmoon-MC1.12.2-1.5.3.jar                          | d72e0dd57935b3e9476212aea0c0df352dd76291 |     | LC    | forgelin           | 1.8.4                   | Forgelin-1.8.4.jar                                    | None                                     |     | LC    | bountiful          | 2.2.2                   | Bountiful-2.2.2.jar                                   | None                                     |     | LC    | camera             | 1.0.10                  | camera-1.0.10.jar                                     | None                                     |     | LC    | chisel             | MC1.12.2-1.0.2.45       | Chisel-MC1.12.2-1.0.2.45.jar                          | None                                     |     | LC    | collective         | 3.0                     | collective-1.12.2-3.0.jar                             | None                                     |     | LC    | reskillable        | 1.12.2-1.13.0           | Reskillable-1.12.2-1.13.0.jar                         | None                                     |     | LC    | compatskills       | 1.12.2-1.17.0           | CompatSkills-1.12.2-1.17.0.jar                        | None                                     |     | LC    | creativecore       | 1.10.0                  | CreativeCore_v1.10.71_mc1.12.2.jar                    | None                                     |     | LC    | customnpcs         | 1.12                    | CustomNPCs_1.12.2-(05Jul20).jar                       | None                                     |     | LC    | darknesslib        | 1.1.2                   | DarknessLib-1.12.2-1.1.2.jar                          | 220f10d3a93b3ff5fbaa7434cc629d863d6751b9 |     | LC    | dungeonsmod        | @VERSION@               | DungeonsMod-1.12.2-1.0.8.jar                          | None                                     |     | LC    | enhancedvisuals    | 1.3.0                   | EnhancedVisuals_v1.4.4_mc1.12.2.jar                   | None                                     |     | LC    | extrautils2        | 1.0                     | extrautils2-1.12-1.9.9.jar                            | None                                     |     | LC    | futuremc           | 0.2.6                   | Future-MC-0.2.19.jar                                  | None                                     |     | LC    | geckolib3          | 3.0.30                  | geckolib-forge-1.12.2-3.0.31.jar                      | None                                     |     | LC    | gottschcore        | 1.15.1                  | GottschCore-mc1.12.2-f14.23.5.2859-v1.15.1.jar        | None                                     |     | LC    | hardcorerevival    | 1.2.0                   | HardcoreRevival_1.12.2-1.2.0.jar                      | None                                     |     | LC    | waila              | 1.8.26                  | Hwyla-1.8.26-B41_1.12.2.jar                           | None                                     |     | LE    | imsm               | 1.12                    | Instant Massive Structures Mod 1.12.2.jar             | None                                     |     | L     | journeymap         | 1.12.2-5.7.1p2          | journeymap-1.12.2-5.7.1p2.jar                         | None                                     |     | L     | mobsunscreen       | @version@               | mobsunscreen-1.12.2-3.1.5.jar                         | None                                     |     | L     | morpheus           | 1.12.2-3.5.106          | Morpheus-1.12.2-3.5.106.jar                           | None                                     |     | L     | llibrary           | 1.7.20                  | llibrary-1.7.20-1.12.2.jar                            | None                                     |     | L     | mowziesmobs        | 1.5.8                   | mowziesmobs-1.5.8.jar                                 | None                                     |     | L     | nocubessrparmory   | 3.0.0                   | NoCubes_SRP_Combat_Addon_3.0.0.jar                    | None                                     |     | L     | nocubessrpnests    | 3.0.0                   | NoCubes_SRP_Nests_Addon_3.0.0.jar                     | None                                     |     | L     | nocubessrpsurvival | 3.0.0                   | NoCubes_SRP_Survival_Addon_3.0.0.jar                  | None                                     |     | L     | nocubesrptweaks    | V4.1                    | nocubesrptweaks-V4.1.jar                              | None                                     |     | L     | patchouli          | 1.0-23.6                | Patchouli-1.0-23.6.jar                                | None                                     |     | L     | artifacts          | 1.1.2                   | RLArtifacts-1.1.2.jar                                 | None                                     |     | L     | rsgauges           | 1.2.8                   | rsgauges-1.12.2-1.2.8.jar                             | None                                     |     | L     | rustic             | 1.1.7                   | rustic-1.1.7.jar                                      | None                                     |     | L     | silentlib          | 3.0.13                  | SilentLib-1.12.2-3.0.14+168.jar                       | None                                     |     | L     | scalinghealth      | 1.3.37                  | ScalingHealth-1.12.2-1.3.42+147.jar                   | None                                     |     | L     | lteleporters       | 1.12.2-3.0.2            | simpleteleporters-1.12.2-3.0.2.jar                    | None                                     |     | L     | spartanshields     | 1.5.5                   | SpartanShields-1.12.2-1.5.5.jar                       | None                                     |     | L     | spartanweaponry    | 1.5.3                   | SpartanWeaponry-1.12.2-1.5.3.jar                      | None                                     |     | L     | srparasites        | 1.9.18                  | SRParasites-1.12.2v1.9.18.jar                         | None                                     |     | L     | treasure2          | 2.2.0                   | Treasure2-mc1.12.2-f14.23.5.2859-v2.2.1.jar           | None                                     |     | L     | treeharvester      | 4.0                     | treeharvester_1.12.2-4.0.jar                          | None                                     |     | L     | twilightforest     | 3.11.1021               | twilightforest-1.12.2-3.11.1021-universal.jar         | None                                     |     | L     | variedcommodities  | 1.12.2                  | VariedCommodities_1.12.2-(31Mar23).jar                | None                                     |     | L     | voicechat          | 1.12.2-2.4.32           | voicechat-forge-1.12.2-2.4.32.jar                     | None                                     |     | L     | wolfarmor          | 3.8.0                   | WolfArmorAndStorage-1.12.2-3.8.0-universal-signed.jar | None                                     |     | L     | worldborder        | 2.3                     | worldborder_1.12.2-2.3.jar                            | None                                     |     | L     | midnight           | 0.3.5                   | themidnight-0.3.5.jar                                 | None                                     |     | L     | structurize        | 1.12.2-0.10.277-RELEASE | structurize-1.12.2-0.10.277-RELEASE.jar               | None                                     |     Loaded coremods (and transformers):  llibrary (llibrary-core-1.0.11-1.12.2.jar)   net.ilexiconn.llibrary.server.core.plugin.LLibraryTransformer   net.ilexiconn.llibrary.server.core.patcher.LLibraryRuntimePatcher WolfArmorCore (WolfArmorAndStorage-1.12.2-3.8.0-universal-signed.jar)    AstralCore (astralsorcery-1.12.2-1.10.27.jar)    CreativePatchingLoader (CreativeCore_v1.10.71_mc1.12.2.jar)    SecurityCraftLoadingPlugin ([1.12.2] SecurityCraft v1.9.8.jar)    ForgelinPlugin (Forgelin-1.8.4.jar)    midnight (themidnight-0.3.5.jar)   com.mushroom.midnight.core.transformer.MidnightClassTransformer FutureMC (Future-MC-0.2.19.jar)   thedarkcolour.futuremc.asm.CoreTransformer SpartanWeaponry-MixinLoader (SpartanWeaponry-1.12.2-1.5.3.jar)    Backpacked (backpacked-1.4.3-1.12.2.jar)   com.mrcrayfish.backpacked.asm.BackpackedTransformer LoadingPlugin (Reskillable-1.12.2-1.13.0.jar)   codersafterdark.reskillable.base.asm.ClassTransformer LoadingPlugin (Bloodmoon-MC1.12.2-1.5.3.jar)   lumien.bloodmoon.asm.ClassTransformer     Profiler Position: N/A (disabled)     Is Modded: Definitely; Server brand changed to 'fml,forge'     Type: Dedicated Server (map_server.txt)
    • When i add mods like falling leaves, visuality and kappas shaders, even if i restart Minecraft they dont show up in the mods menu and they dont work
    • Delete the forge-client.toml file in your config folder  
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