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[1.15.2] Issues trying to open custom container on a server


throwawaymodder

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I'm running into an odd issue when right-clicking a custom tile entity to open its container on a server, and no amount of Googling has brought me to a solution. It all works fine in singleplayer, but on a server, no GUI appears, and instead this is logged in the client's debug.log:

 

Spoiler

[26Apr2020 21:11:45.761] [Render thread/FATAL] [net.minecraft.util.concurrent.ThreadTaskExecutor/]: Error executing task on Client
com.google.gson.JsonParseException: Don't know how to turn {} into a Component
    at net.minecraft.util.text.ITextComponent$Serializer.deserialize(SourceFile:267) ~[?:?]
    at net.minecraft.util.text.ITextComponent$Serializer.deserialize(SourceFile:175) ~[?:?]
    at com.google.gson.internal.bind.TreeTypeAdapter.read(TreeTypeAdapter.java:69) ~[gson-2.8.0.jar:?]
    at net.minecraft.util.JSONUtils.func_188173_a(SourceFile:494) ~[?:?]
    at net.minecraft.util.JSONUtils.func_188176_a(SourceFile:519) ~[?:?]
    at net.minecraft.util.text.ITextComponent$Serializer.func_150699_a(SourceFile:399) ~[?:?]
    at net.minecraft.network.PacketBuffer.func_179258_d(PacketBuffer.java:153) ~[?:?]
    at net.minecraftforge.fml.network.FMLPlayMessages$OpenContainer.decode(FMLPlayMessages.java:279) ~[?:?]
    at net.minecraftforge.fml.network.simple.IndexedMessageCodec.lambda$tryDecode$0(IndexedMessageCodec.java:120) ~[?:?]
    at java.util.Optional.map(Optional.java:215) ~[?:1.8.0_74]
    at net.minecraftforge.fml.network.simple.IndexedMessageCodec.tryDecode(IndexedMessageCodec.java:120) ~[?:?]
    at net.minecraftforge.fml.network.simple.IndexedMessageCodec.consume(IndexedMessageCodec.java:162) ~[?:?]
    at net.minecraftforge.fml.network.simple.SimpleChannel.networkEventListener(SimpleChannel.java:80) ~[?:?]
    at net.minecraftforge.eventbus.EventBus.doCastFilter(EventBus.java:212) ~[eventbus-2.0.0-milestone.1-service.jar:?]
    at net.minecraftforge.eventbus.EventBus.lambda$addListener$11(EventBus.java:204) ~[eventbus-2.0.0-milestone.1-service.jar:?]
    at net.minecraftforge.eventbus.EventBus.post(EventBus.java:258) ~[eventbus-2.0.0-milestone.1-service.jar:?]
    at net.minecraftforge.fml.network.NetworkInstance.dispatch(NetworkInstance.java:84) ~[?:?]
    at net.minecraftforge.fml.network.NetworkHooks.lambda$onCustomPayload$1(NetworkHooks.java:78) ~[?:?]
    at java.util.Optional.map(Optional.java:215) ~[?:1.8.0_74]
    at net.minecraftforge.fml.network.NetworkHooks.onCustomPayload(NetworkHooks.java:78) ~[?:?]
    at net.minecraft.client.network.play.ClientPlayNetHandler.func_147240_a(ClientPlayNetHandler.java:1868) ~[?:?]
    at net.minecraft.network.play.server.SCustomPayloadPlayPacket.func_148833_a(SCustomPayloadPlayPacket.java:59) ~[?:?]
    at net.minecraft.network.play.server.SCustomPayloadPlayPacket.func_148833_a(SCustomPayloadPlayPacket.java:11) ~[?:?]
    at net.minecraft.network.PacketThreadUtil.func_225383_a(SourceFile:21) ~[?:?]
    at net.minecraft.util.concurrent.ThreadTaskExecutor.func_213166_h(SourceFile:144) ~[?:?]
    at net.minecraft.util.concurrent.RecursiveEventLoop.func_213166_h(SourceFile:23) ~[?:?]
    at net.minecraft.util.concurrent.ThreadTaskExecutor.func_213168_p(SourceFile:118) ~[?:?]
    at net.minecraft.util.concurrent.ThreadTaskExecutor.func_213160_bf(SourceFile:103) ~[?:?]
    at net.minecraft.client.Minecraft.func_195542_b(Minecraft.java:898) ~[?:?]
    at net.minecraft.client.Minecraft.func_99999_d(Minecraft.java:554) ~[?:?]
    at net.minecraft.client.main.Main.main(SourceFile:204) ~[1.15.2-forge-31.1.25.jar:?]
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.8.0_74]
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[?:1.8.0_74]
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.8.0_74]
    at java.lang.reflect.Method.invoke(Method.java:498) ~[?:1.8.0_74]
    at net.minecraftforge.fml.loading.FMLClientLaunchProvider.lambda$launchService$0(FMLClientLaunchProvider.java:56) ~[forge-1.15.2-31.1.25.jar:31.1]
    at cpw.mods.modlauncher.LaunchServiceHandlerDecorator.launch(LaunchServiceHandlerDecorator.java:37) [modlauncher-5.0.0-milestone.4.jar:?]
    at cpw.mods.modlauncher.LaunchServiceHandler.launch(LaunchServiceHandler.java:54) [modlauncher-5.0.0-milestone.4.jar:?]
    at cpw.mods.modlauncher.LaunchServiceHandler.launch(LaunchServiceHandler.java:72) [modlauncher-5.0.0-milestone.4.jar:?]
    at cpw.mods.modlauncher.Launcher.run(Launcher.java:81) [modlauncher-5.0.0-milestone.4.jar:?]
    at cpw.mods.modlauncher.Launcher.main(Launcher.java:65) [modlauncher-5.0.0-milestone.4.jar:?]

 

Neither the server nor the client crashes, and nothing is logged on the server. Here's the relevant code:

 

PackageBlock.Java:

public class PackageBlock extends ContainerBlock {

	...

    @Override
        public ActionResultType onBlockActivated(BlockState state, World world, BlockPos pos, PlayerEntity player, Hand hand, BlockRayTraceResult hit) {
        ...
        if (!world.isRemote()) {
            ...
            TileEntity te = world.getTileEntity(pos);
            if (te != null && te instanceof PackageTileEntity) {
                NetworkHooks.openGui((ServerPlayerEntity) player, (PackageTileEntity) te);
            }
            return ActionResultType.SUCCESS;
        }
    }

}

 

PackageTileEntity.java

public class PackageTileEntity extends TileEntity implements IInventory, INamedContainerProvider {

	...

	@Override
	public Container createMenu(int windowId, PlayerInventory playerInventory, PlayerEntity player) {
		return new PackageContainer(windowId, playerInventory, this);
	}

	...

}

 

PackageContainer.java

public class PackageContainer extends Container implements INameable {

	public PackageContainer(int windowId, PlayerInventory playerInventory) {
		this(windowId, playerInventory, new Inventory(PackageBlock.INVENTORY_SIZE));
	}

	public PackageContainer(int windowId, PlayerInventory playerInventory, IInventory packageInventory) {
		super(EnderMailContainers.PACKAGE_CONTAINER, windowId);
		this.packageInventory = packageInventory;
		packageInventory.openInventory(playerInventory.player);
		...<add slots>...
	}
          
	...

}

 

EnderMailContainers.java

@EventBusSubscriber(bus = EventBusSubscriber.Bus.MOD)
@ObjectHolder(EnderMail.MODID)
public class EnderMailContainers {

	@ObjectHolder(PackageContainer.NAME)
	public static final ContainerType<PackageContainer> PACKAGE_CONTAINER = null;

	@SubscribeEvent
	public static void onContainerTypeRegistry(final RegistryEvent.Register<ContainerType<?>> event) {
		event.getRegistry().register(new ContainerType<>(PackageContainer::new).setRegistryName(PackageContainer.NAME));
	}

}

 

EnderMail.java

public void clientInit(FMLClientSetupEvent event) {
	...
	ScreenManager.registerFactory(EnderMailContainers.PACKAGE_CONTAINER, PackageScreen::new);
}

 

The entirety of the source code can be found here, if it's needed.

 

Things I've tried:

  • Using player.openContainer instead of NetworkHooks.openGui in PackageBlock.java. The result was the same, except that the player was kicked off the server with a similar error message appearing on the screen before returning to the multiplayer menu: "Internal Exception: io.netty.handler.codec.DecoderException:com.google.gson.JsonParseException: Don't know how to turn {} into a Component." The error logged in debug.log was identical, and nothing was logged on the server.
  • Passing a PacketBuffer argument with the NetworkHooks.openGui call. Same result.

 

Thanks in advance for the help.

Edited by throwawaymodder
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25 minutes ago, throwawaymodder said:

Don't know how to turn {} into a Component

One of your ITextCompoments is incorrectly reading information. Maybe its an uninitialized string object within your tile entity. Maybe its the fact you have I18n on a variable in your container even though its client side only. You could easily put a breakpoint at all of your ITextComponent instances and find the location where it errors. I'm not sure where the exact error is, but your code seriously needs an overhaul to the current standard including no IInventory, TranslationTextComponent, etc.

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