1.14.4 Command error?

Sorry this is the wrong forum, but the other ones link does not work

Whenever I try to execute the command in single player It just sends me 'An unexpected error occured trying to execute that command'

Here is the command code:

public static void register(CommandDispatcher<CommandSource> d) {
		d.register(Commands.literal("import").requires(s->s.hasPermissionLevel(2))
				
				.then(Commands.argument("modelFile", StringArgument.string())
						
				.then(Commands.argument("xOrigin", IntegerArgumentType.integer())
						
				.then(Commands.argument("yOrigin", IntegerArgumentType.integer())
						
				.then(Commands.argument("zOrigin", IntegerArgumentType.integer())
			
				.then(Commands.argument("blockID", ResourceLocationArgument.resourceLocation())
						.suggests(blockSuggestions)//show the suggestions for all blocks
				.executes(context -> {
					String modelFile = context.getArgument("modelFile", String.class);
					int x = context.getArgument("xOrigin", int.class);
					int y = context.getArgument("yOrigin", int.class);
					int z = context.getArgument("zOrigin", int.class);
					Block block = ForgeRegistries.BLOCKS.getValue(
							 context.getArgument("blockID", ResourceLocation.class));
					//handle stuff
					return 0;
				}).then(Commands.argument("scale", IntegerArgumentType.integer()))
						
					.executes(context->{
						String modelFile = context.getArgument("modelFile", String.class);
						int x = context.getArgument("xOrigin", int.class);
						int y = context.getArgument("yOrigin", int.class);
						int z = context.getArgument("zOrigin", int.class);
						int scale = context.getArgument("scale", int.class);
						Block block = ForgeRegistries.BLOCKS.getValue(
								 context.getArgument("blockID", ResourceLocation.class));
						//handle stuff, with scale argument 
						return 0;
					})
		
		))))));
	}

The command gets registered as I can use it in game and It shows suggestions and tells me I have the correct number of args but whenever I enter, it just says there was an error. I debugged and the code does not even execute the execute lambas so It cant be the code (it doesnt event enter the execute methods)

What am I doing wrong?

Registering in main:

public ...() {
		instance=this;
		IEventBus eventBus = FMLJavaModLoadingContext.get().getModEventBus();
	    eventBus.addListener(this::setup);
	    MinecraftForge.EVENT_BUS.register(this);
	}
	
	@SubscribeEvent
	public void setup(FMLServerStartingEvent event) {
		ImportCommand.register(event.getCommandDispatcher());
		System.out.println("\n\n\nLoaded the Import command\n\n\n");
	}

Edited April 24, 20205 yr by Shadow_tingBRO