Minecraft crashes each time I load into a world already created or not.

Does anyone has an idea on how to fix this ?

 

This is my crash log :

Spoiler

---- Minecraft Crash Report ----
// Uh... Did I do that?

Time: 01/03/2022 18:54
Description: Ticking memory connection

java.lang.NullPointerException: Cannot invoke "Object.hashCode()" because "this.type" is null
	at com.mojang.brigadier.tree.ArgumentCommandNode.hashCode(ArgumentCommandNode.java:113) ~[brigadier-1.0.17.jar:?] {}
	at java.util.Objects.hashCode(Objects.java:103) ~[?:?] {}
	at java.util.HashMap$Node.hashCode(HashMap.java:298) ~[?:?] {}
	at java.util.AbstractMap.hashCode(AbstractMap.java:527) ~[?:?] {}
	at com.mojang.brigadier.tree.CommandNode.hashCode(CommandNode.java:137) ~[brigadier-1.0.17.jar:?] {re:classloading}
	at com.mojang.brigadier.tree.LiteralCommandNode.hashCode(LiteralCommandNode.java:100) ~[brigadier-1.0.17.jar:?] {re:classloading}
	at java.util.Objects.hashCode(Objects.java:103) ~[?:?] {}
	at java.util.HashMap$Node.hashCode(HashMap.java:298) ~[?:?] {}
	at java.util.AbstractMap.hashCode(AbstractMap.java:527) ~[?:?] {}
	at com.mojang.brigadier.tree.CommandNode.hashCode(CommandNode.java:137) ~[brigadier-1.0.17.jar:?] {re:classloading}
	at java.util.HashMap.hash(HashMap.java:340) ~[?:?] {}
	at java.util.HashMap.put(HashMap.java:612) ~[?:?] {}
	at net.minecraft.command.Commands.sendCommands(Commands.java:272) ~[forge:?] {re:classloading}
	at net.minecraft.server.management.PlayerList.sendPlayerPermissionLevel(PlayerList.java:598) ~[forge:?] {re:classloading}
	at net.minecraft.server.management.PlayerList.sendPlayerPermissionLevel(PlayerList.java:492) ~[forge:?] {re:classloading}
	at net.minecraft.server.management.PlayerList.placeNewPlayer(PlayerList.java:163) ~[forge:?] {re:classloading}
	at net.minecraft.network.login.ServerLoginNetHandler.handleAcceptedLogin(ServerLoginNetHandler.java:118) ~[forge:?] {re:classloading}
	at net.minecraft.network.login.ServerLoginNetHandler.tick(ServerLoginNetHandler.java:65) ~[forge:?] {re:classloading}
	at net.minecraft.network.NetworkManager.tick(NetworkManager.java:222) ~[forge:?] {re:classloading}
	at net.minecraft.network.NetworkSystem.tick(NetworkSystem.java:134) ~[forge:?] {re:classloading}
	at net.minecraft.server.MinecraftServer.tickChildren(MinecraftServer.java:865) ~[forge:?] {re:classloading,pl:accesstransformer:B}
	at net.minecraft.server.MinecraftServer.tickServer(MinecraftServer.java:787) ~[forge:?] {re:classloading,pl:accesstransformer:B}
	at net.minecraft.server.integrated.IntegratedServer.tickServer(IntegratedServer.java:78) ~[forge:?] {re:classloading,pl:runtimedistcleaner:A}
	at net.minecraft.server.MinecraftServer.runServer(MinecraftServer.java:642) ~[forge:?] {re:classloading,pl:accesstransformer:B}
	at net.minecraft.server.MinecraftServer.lambda$spin$0(MinecraftServer.java:232) ~[forge:?] {re:classloading,pl:accesstransformer:B}
	at java.lang.Thread.run(Thread.java:831) [?:?] {}


A detailed walkthrough of the error, its code path and all known details is as follows:
---------------------------------------------------------------------------------------

-- System Details --
Details:
	Minecraft Version: 1.16.5
	Minecraft Version ID: 1.16.5
	Operating System: Windows 10 (amd64) version 10.0
	Java Version: 16.0.2, Oracle Corporation
	Java VM Version: OpenJDK 64-Bit Server VM (mixed mode), Oracle Corporation
	Memory: 573577536 bytes (547 MB) / 1207959552 bytes (1152 MB) up to 12868124672 bytes (12272 MB)
	CPUs: 16
	JVM Flags: 3 total; -XX:+ShowCodeDetailsInExceptionMessages -XX:+IgnoreUnrecognizedVMOptions -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump
	ModLauncher: 8.0.9+86+master.3cf110c
	ModLauncher launch target: fmluserdevclient
	ModLauncher naming: mcp
	ModLauncher services: 
		/mixin-0.8.4.jar mixin PLUGINSERVICE 
		/eventbus-4.0.0.jar eventbus PLUGINSERVICE 
		/forge-1.16.5-36.2.20_mapped_official_1.16.5-launcher.jar object_holder_definalize PLUGINSERVICE 
		/forge-1.16.5-36.2.20_mapped_official_1.16.5-launcher.jar runtime_enum_extender PLUGINSERVICE 
		/forge-1.16.5-36.2.20_mapped_official_1.16.5-launcher.jar capability_inject_definalize PLUGINSERVICE 
		/accesstransformers-3.0.1.jar accesstransformer PLUGINSERVICE 
		/forge-1.16.5-36.2.20_mapped_official_1.16.5-launcher.jar runtimedistcleaner PLUGINSERVICE 
		/mixin-0.8.4.jar mixin TRANSFORMATIONSERVICE 
		/forge-1.16.5-36.2.20_mapped_official_1.16.5-launcher.jar fml TRANSFORMATIONSERVICE 
	FML: 36.2
	Forge: net.minecraftforge:36.2.20
	FML Language Providers: 
		javafml@36.2
		minecraft@1
	Mod List: 
		client-extra.jar                                  |Minecraft                     |minecraft                     |1.16.5              |DONE      |Manifest: a1:d4:5e:04:4f:d3:d6:e0:7b:37:97:cf:77:b0:de:ad:4a:47:ce:8c:96:49:5f:0a:cf:8c:ae:b2:6d:4b:8a:3f
		forge-1.16.5-36.2.20_mapped_official_1.16.5-recomp|Forge                         |forge                         |36.2.20             |DONE      |Manifest: NOSIGNATURE
		main                                              |Custom dimension mod          |customdim                     |1.0                 |DONE      |Manifest: NOSIGNATURE
	Crash Report UUID: cdb8670d-65ee-452a-9e72-46d4c3913fe1
	Player Count: 0 / 8; []
	Data Packs: vanilla, mod:forge, mod:customdim
	Type: Integrated Server (map_client.txt)
	Is Modded: Definitely; Client brand changed to 'forge'

 

Edited March 1, 20223 yr by Natank25

The whole code or just the command class ?

Because i don't know how to do git repo, i send the Command class

 

SwitchDimCommand:

package io.github.Natank25.customdim.commom.command.impl;

import com.mojang.brigadier.Command;
import com.mojang.brigadier.builder.LiteralArgumentBuilder;

import io.github.Natank25.customdim.commom.command.BaseCommand;
import io.github.Natank25.customdim.core.init.DimensionInit;
import net.minecraft.command.CommandSource;
import net.minecraft.command.Commands;
import net.minecraft.command.arguments.EntityArgument;
import net.minecraft.entity.player.ServerPlayerEntity;
import net.minecraft.world.World;

public class SwitchDimCommand extends BaseCommand {

	public SwitchDimCommand(String name, int permissionLevel, boolean enabled) {
		super(name, permissionLevel, enabled);
	}

	@Override
	public LiteralArgumentBuilder<CommandSource> setExecution() {
		return builder.then(Commands.argument("null", null)
				.executes(source -> execute(source.getSource(), EntityArgument.getPlayer(source, "player"))));
	}

	private int execute(CommandSource source, ServerPlayerEntity player) {
		if (source.getLevel() == source.getServer().getLevel(World.OVERWORLD)) {
			player.teleportTo(source.getServer().getLevel(DimensionInit.EMPTY_DIM),0,4,0,0,0);

		} else if (source.getLevel() == source.getServer().getLevel(DimensionInit.EMPTY_DIM)) {
			player.teleportTo(source.getServer().getLevel(World.OVERWORLD),-268,76,276,0,0);
		}
		return Command.SINGLE_SUCCESS;
	}

}

 

BaseCommand:

package io.github.Natank25.customdim.commom.command;

import com.mojang.brigadier.builder.LiteralArgumentBuilder;

import net.minecraft.command.CommandSource;
import net.minecraft.command.Commands;

public class BaseCommand {
	protected LiteralArgumentBuilder<CommandSource> builder;
	boolean enabled;
	
	public BaseCommand(String name, int permissionLevel, boolean enabled) {
		this.builder = Commands.literal(name).requires(source -> source.hasPermission(permissionLevel));
		this.enabled = enabled;
		
	}
	
	public LiteralArgumentBuilder<CommandSource> getBuilder() { 
		return builder;		
	}
	
	public boolean isEnabled() {
		return enabled;
	}
	
	public LiteralArgumentBuilder<CommandSource> setExecution() { 
		return null;		
	}
}

 

True, i modified it from

Commands.argument("player", EntityArgument.player())

to

Commands.argument("null", null)

to remove the argument and it didn't worked (Do you have any ideas on how to do it ?).

I tried to launch minecraft again, and it work, thank you for your help

And how do I "connect" .executes() to builder.then() ?

The code of vanilla commands ?

How do i do this ?