Grookey

https://github.com/Manueh333/Marvel-MOD/blob/new-1.17.1/src/main/java/manueh/marvel_themod/client/ClientSetup.java#L58-L65 https://github.com/Manueh333/Marvel-MOD/blob/new-1.17.1/src/main/java/manueh/marvel_themod/common/items/InfinityGauntlet.java When have the item on the inventory the game crashes [08:44:28] [Server thread/FATAL]: Error executing task on Server java.lang.IllegalArgumentException: Invalid null NBT value with key Parent at net.minecraft.nbt.CompoundTag.put(CompoundTag.java:98) ~[forge-1.17.1-37.1.1_mapped_official_1.17.1.jar%2375!:?] at net.minecraftforge.common.capabilities.CapabilityDispatcher.serializeNBT(CapabilityDispatcher.java:127) ~[forge-1.17.1-37.1.1_mapped_official_1.17.1.jar%2374%2380!:?] at net.minecraftforge.common.capabilities.CapabilityDispatcher.areCompatible(CapabilityDispatcher.java:148) ~[forge-1.17.1-37.1.1_mapped_official_1.17.1.jar%2374%2380!:?] at net.minecraftforge.common.capabilities.CapabilityProvider.areCapsCompatible(CapabilityProvider.java:124) ~[forge-1.17.1-37.1.1_mapped_official_1.17.1.jar%2374%2380!:?] at net.minecraftforge.common.capabilities.CapabilityProvider.areCapsCompatible(CapabilityProvider.java:105) ~[forge-1.17.1-37.1.1_mapped_official_1.17.1.jar%2374%2380!:?] at net.minecraft.world.item.ItemStack.matches(ItemStack.java:435) ~[forge-1.17.1-37.1.1_mapped_official_1.17.1.jar%2375!:?] at net.minecraft.world.item.ItemStack.matches(ItemStack.java:423) ~[forge-1.17.1-37.1.1_mapped_official_1.17.1.jar%2375!:?] at net.minecraft.world.inventory.AbstractContainerMenu.triggerSlotListeners(AbstractContainerMenu.java:206) ~[forge-1.17.1-37.1.1_mapped_official_1.17.1.jar%2375!:?] at net.minecraft.world.inventory.AbstractContainerMenu.broadcastChanges(AbstractContainerMenu.java:163) ~[forge-1.17.1-37.1.1_mapped_official_1.17.1.jar%2375!:?] at net.minecraft.server.network.ServerGamePacketListenerImpl.handleSetCreativeModeSlot(ServerGamePacketListenerImpl.java:1341) ~[forge-1.17.1-37.1.1_mapped_official_1.17.1.jar%2375!:?] at net.minecraft.network.protocol.game.ServerboundSetCreativeModeSlotPacket.handle(ServerboundSetCreativeModeSlotPacket.java:17) ~[forge-1.17.1-37.1.1_mapped_official_1.17.1.jar%2375!:?] at net.minecraft.network.protocol.game.ServerboundSetCreativeModeSlotPacket.handle(ServerboundSetCreativeModeSlotPacket.java:7) ~[forge-1.17.1-37.1.1_mapped_official_1.17.1.jar%2375!:?] at net.minecraft.network.protocol.PacketUtils.lambda$ensureRunningOnSameThread$0(PacketUtils.java:21) ~[forge-1.17.1-37.1.1_mapped_official_1.17.1.jar%2375!:?] at net.minecraft.server.TickTask.run(TickTask.java:18) ~[forge-1.17.1-37.1.1_mapped_official_1.17.1.jar%2375!:?] at net.minecraft.util.thread.BlockableEventLoop.doRunTask(BlockableEventLoop.java:151) ~[forge-1.17.1-37.1.1_mapped_official_1.17.1.jar%2375!:?] at net.minecraft.util.thread.ReentrantBlockableEventLoop.doRunTask(ReentrantBlockableEventLoop.java:23) ~[forge-1.17.1-37.1.1_mapped_official_1.17.1.jar%2375!:?] at net.minecraft.server.MinecraftServer.doRunTask(MinecraftServer.java:776) ~[forge-1.17.1-37.1.1_mapped_official_1.17.1.jar%2375!:?] at net.minecraft.server.MinecraftServer.doRunTask(MinecraftServer.java:162) ~[forge-1.17.1-37.1.1_mapped_official_1.17.1.jar%2375!:?] at net.minecraft.util.thread.BlockableEventLoop.pollTask(BlockableEventLoop.java:125) ~[forge-1.17.1-37.1.1_mapped_official_1.17.1.jar%2375!:?] at net.minecraft.server.MinecraftServer.pollTaskInternal(MinecraftServer.java:759) ~[forge-1.17.1-37.1.1_mapped_official_1.17.1.jar%2375!:?] at net.minecraft.server.MinecraftServer.pollTask(MinecraftServer.java:753) ~[forge-1.17.1-37.1.1_mapped_official_1.17.1.jar%2375!:?] at net.minecraft.util.thread.BlockableEventLoop.managedBlock(BlockableEventLoop.java:134) ~[forge-1.17.1-37.1.1_mapped_official_1.17.1.jar%2375!:?] at net.minecraft.server.MinecraftServer.waitUntilNextTick(MinecraftServer.java:739) ~[forge-1.17.1-37.1.1_mapped_official_1.17.1.jar%2375!:?] at net.minecraft.server.MinecraftServer.runServer(MinecraftServer.java:688) ~[forge-1.17.1-37.1.1_mapped_official_1.17.1.jar%2375!:?] at net.minecraft.server.MinecraftServer.lambda$spin$2(MinecraftServer.java:258) ~[forge-1.17.1-37.1.1_mapped_official_1.17.1.jar%2375!:?] at java.lang.Thread.run(Thread.java:833) [?:?] [08:44:29] [Server thread/ERROR]: Encountered an unexpected exception net.minecraft.ReportedException: Ticking entity at net.minecraft.server.MinecraftServer.tickChildren(MinecraftServer.java:887) ~[forge-1.17.1-37.1.1_mapped_official_1.17.1.jar%2375!:?] at net.minecraft.server.MinecraftServer.tickServer(MinecraftServer.java:819) ~[forge-1.17.1-37.1.1_mapped_official_1.17.1.jar%2375!:?] at net.minecraft.client.server.IntegratedServer.tickServer(IntegratedServer.java:85) ~[forge-1.17.1-37.1.1_mapped_official_1.17.1.jar%2375!:?] at net.minecraft.server.MinecraftServer.runServer(MinecraftServer.java:684) ~[forge-1.17.1-37.1.1_mapped_official_1.17.1.jar%2375!:?] at net.minecraft.server.MinecraftServer.lambda$spin$2(MinecraftServer.java:258) ~[forge-1.17.1-37.1.1_mapped_official_1.17.1.jar%2375!:?] at java.lang.Thread.run(Thread.java:833) [?:?] Caused by: java.lang.IllegalArgumentException: Invalid null NBT value with key Parent at net.minecraft.nbt.CompoundTag.put(CompoundTag.java:98) ~[forge-1.17.1-37.1.1_mapped_official_1.17.1.jar%2375!:?] at net.minecraftforge.common.capabilities.CapabilityDispatcher.serializeNBT(CapabilityDispatcher.java:127) ~[forge-1.17.1-37.1.1_mapped_official_1.17.1.jar%2374%2380!:?] at net.minecraftforge.common.capabilities.CapabilityDispatcher.areCompatible(CapabilityDispatcher.java:148) ~[forge-1.17.1-37.1.1_mapped_official_1.17.1.jar%2374%2380!:?] at net.minecraftforge.common.capabilities.CapabilityProvider.areCapsCompatible(CapabilityProvider.java:124) ~[forge-1.17.1-37.1.1_mapped_official_1.17.1.jar%2374%2380!:?] at net.minecraftforge.common.capabilities.CapabilityProvider.areCapsCompatible(CapabilityProvider.java:105) ~[forge-1.17.1-37.1.1_mapped_official_1.17.1.jar%2374%2380!:?] at net.minecraft.world.item.ItemStack.matches(ItemStack.java:435) ~[forge-1.17.1-37.1.1_mapped_official_1.17.1.jar%2375!:?] at net.minecraft.world.item.ItemStack.matches(ItemStack.java:423) ~[forge-1.17.1-37.1.1_mapped_official_1.17.1.jar%2375!:?] at net.minecraft.world.inventory.AbstractContainerMenu.triggerSlotListeners(AbstractContainerMenu.java:206) ~[forge-1.17.1-37.1.1_mapped_official_1.17.1.jar%2375!:?] at net.minecraft.world.inventory.AbstractContainerMenu.broadcastChanges(AbstractContainerMenu.java:163) ~[forge-1.17.1-37.1.1_mapped_official_1.17.1.jar%2375!:?] at net.minecraft.server.level.ServerPlayer.tick(ServerPlayer.java:399) ~[forge-1.17.1-37.1.1_mapped_official_1.17.1.jar%2375!:?] at net.minecraft.server.level.ServerLevel.tickNonPassenger(ServerLevel.java:623) ~[forge-1.17.1-37.1.1_mapped_official_1.17.1.jar%2375!:?] at net.minecraft.world.level.Level.guardEntityTick(Level.java:486) ~[forge-1.17.1-37.1.1_mapped_official_1.17.1.jar%2375!:?] at net.minecraft.server.level.ServerLevel.lambda$tick$5(ServerLevel.java:384) ~[forge-1.17.1-37.1.1_mapped_official_1.17.1.jar%2375!:?] at net.minecraft.world.level.entity.EntityTickList.forEach(EntityTickList.java:54) ~[forge-1.17.1-37.1.1_mapped_official_1.17.1.jar%2375!:?] at net.minecraft.server.level.ServerLevel.tick(ServerLevel.java:365) ~[forge-1.17.1-37.1.1_mapped_official_1.17.1.jar%2375!:?] at net.minecraft.server.MinecraftServer.tickChildren(MinecraftServer.java:883) ~[forge-1.17.1-37.1.1_mapped_official_1.17.1.jar%2375!:?] ... 5 more ---- Minecraft Crash Report ---- // I bet Cylons wouldn't have this problem. Time: 17/7/22 8:44 Description: Ticking entity java.lang.IllegalArgumentException: Invalid null NBT value with key Parent at net.minecraft.nbt.CompoundTag.put(CompoundTag.java:98) ~[forge-1.17.1-37.1.1_mapped_official_1.17.1.jar%2375!:?] {re:classloading} at net.minecraftforge.common.capabilities.CapabilityDispatcher.serializeNBT(CapabilityDispatcher.java:127) ~[forge-1.17.1-37.1.1_mapped_official_1.17.1.jar%2374%2380!:?] {re:classloading} at net.minecraftforge.common.capabilities.CapabilityDispatcher.areCompatible(CapabilityDispatcher.java:148) ~[forge-1.17.1-37.1.1_mapped_official_1.17.1.jar%2374%2380!:?] {re:classloading} at net.minecraftforge.common.capabilities.CapabilityProvider.areCapsCompatible(CapabilityProvider.java:124) ~[forge-1.17.1-37.1.1_mapped_official_1.17.1.jar%2374%2380!:?] {re:classloading} at net.minecraftforge.common.capabilities.CapabilityProvider.areCapsCompatible(CapabilityProvider.java:105) ~[forge-1.17.1-37.1.1_mapped_official_1.17.1.jar%2374%2380!:?] {re:classloading} at net.minecraft.world.item.ItemStack.matches(ItemStack.java:435) ~[forge-1.17.1-37.1.1_mapped_official_1.17.1.jar%2375!:?] {re:classloading,xf:fml:forge:itemstack} at net.minecraft.world.item.ItemStack.matches(ItemStack.java:423) ~[forge-1.17.1-37.1.1_mapped_official_1.17.1.jar%2375!:?] {re:classloading,xf:fml:forge:itemstack} at net.minecraft.world.inventory.AbstractContainerMenu.triggerSlotListeners(AbstractContainerMenu.java:206) ~[forge-1.17.1-37.1.1_mapped_official_1.17.1.jar%2375!:?] {re:classloading} at net.minecraft.world.inventory.AbstractContainerMenu.broadcastChanges(AbstractContainerMenu.java:163) ~[forge-1.17.1-37.1.1_mapped_official_1.17.1.jar%2375!:?] {re:classloading} at net.minecraft.server.level.ServerPlayer.tick(ServerPlayer.java:399) ~[forge-1.17.1-37.1.1_mapped_official_1.17.1.jar%2375!:?] {re:classloading,pl:accesstransformer:B} at net.minecraft.server.level.ServerLevel.tickNonPassenger(ServerLevel.java:623) ~[forge-1.17.1-37.1.1_mapped_official_1.17.1.jar%2375!:?] {re:classloading,pl:accesstransformer:B} at net.minecraft.world.level.Level.guardEntityTick(Level.java:486) ~[forge-1.17.1-37.1.1_mapped_official_1.17.1.jar%2375!:?] {re:classloading,pl:accesstransformer:B} at net.minecraft.server.level.ServerLevel.lambda$tick$5(ServerLevel.java:384) ~[forge-1.17.1-37.1.1_mapped_official_1.17.1.jar%2375!:?] {re:classloading,pl:accesstransformer:B} at net.minecraft.world.level.entity.EntityTickList.forEach(EntityTickList.java:54) ~[forge-1.17.1-37.1.1_mapped_official_1.17.1.jar%2375!:?] {re:classloading} at net.minecraft.server.level.ServerLevel.tick(ServerLevel.java:365) ~[forge-1.17.1-37.1.1_mapped_official_1.17.1.jar%2375!:?] {re:classloading,pl:accesstransformer:B} at net.minecraft.server.MinecraftServer.tickChildren(MinecraftServer.java:883) ~[forge-1.17.1-37.1.1_mapped_official_1.17.1.jar%2375!:?] {re:classloading,pl:accesstransformer:B} at net.minecraft.server.MinecraftServer.tickServer(MinecraftServer.java:819) ~[forge-1.17.1-37.1.1_mapped_official_1.17.1.jar%2375!:?] {re:classloading,pl:accesstransformer:B} at net.minecraft.client.server.IntegratedServer.tickServer(IntegratedServer.java:85) ~[forge-1.17.1-37.1.1_mapped_official_1.17.1.jar%2375!:?] {re:classloading,pl:runtimedistcleaner:A} at net.minecraft.server.MinecraftServer.runServer(MinecraftServer.java:684) ~[forge-1.17.1-37.1.1_mapped_official_1.17.1.jar%2375!:?] {re:classloading,pl:accesstransformer:B} at net.minecraft.server.MinecraftServer.lambda$spin$2(MinecraftServer.java:258) ~[forge-1.17.1-37.1.1_mapped_official_1.17.1.jar%2375!:?] {re:classloading,pl:accesstransformer:B} at java.lang.Thread.run(Thread.java:833) ~[?:?] {} A detailed walkthrough of the error, its code path and all known details is as follows: --------------------------------------------------------------------------------------- -- Head -- Thread: Render thread Stacktrace: at net.minecraft.nbt.CompoundTag.put(CompoundTag.java:98) ~[forge-1.17.1-37.1.1_mapped_official_1.17.1.jar%2375!:?] {re:classloading} at net.minecraftforge.common.capabilities.CapabilityDispatcher.serializeNBT(CapabilityDispatcher.java:127) ~[forge-1.17.1-37.1.1_mapped_official_1.17.1.jar%2374%2380!:?] {re:classloading} at net.minecraftforge.common.capabilities.CapabilityDispatcher.areCompatible(CapabilityDispatcher.java:148) ~[forge-1.17.1-37.1.1_mapped_official_1.17.1.jar%2374%2380!:?] {re:classloading} at net.minecraftforge.common.capabilities.CapabilityProvider.areCapsCompatible(CapabilityProvider.java:124) ~[forge-1.17.1-37.1.1_mapped_official_1.17.1.jar%2374%2380!:?] {re:classloading} at net.minecraftforge.common.capabilities.CapabilityProvider.areCapsCompatible(CapabilityProvider.java:105) ~[forge-1.17.1-37.1.1_mapped_official_1.17.1.jar%2374%2380!:?] {re:classloading} at net.minecraft.world.item.ItemStack.matches(ItemStack.java:435) ~[forge-1.17.1-37.1.1_mapped_official_1.17.1.jar%2375!:?] {re:classloading,xf:fml:forge:itemstack} at net.minecraft.world.item.ItemStack.matches(ItemStack.java:423) ~[forge-1.17.1-37.1.1_mapped_official_1.17.1.jar%2375!:?] {re:classloading,xf:fml:forge:itemstack} at net.minecraft.world.inventory.AbstractContainerMenu.triggerSlotListeners(AbstractContainerMenu.java:206) ~[forge-1.17.1-37.1.1_mapped_official_1.17.1.jar%2375!:?] {re:classloading} at net.minecraft.world.inventory.AbstractContainerMenu.broadcastChanges(AbstractContainerMenu.java:163) ~[forge-1.17.1-37.1.1_mapped_official_1.17.1.jar%2375!:?] {re:classloading} at net.minecraft.server.level.ServerPlayer.tick(ServerPlayer.java:399) ~[forge-1.17.1-37.1.1_mapped_official_1.17.1.jar%2375!:?] {re:classloading,pl:accesstransformer:B} at net.minecraft.server.level.ServerLevel.tickNonPassenger(ServerLevel.java:623) ~[forge-1.17.1-37.1.1_mapped_official_1.17.1.jar%2375!:?] {re:classloading,pl:accesstransformer:B} -- Entity being ticked -- Details: Entity Type: minecraft:player (net.minecraft.server.level.ServerPlayer) Entity ID: 180 Entity Name: Dev Entity's Exact location: -180.79, 77.24, 265.77 Entity's Block location: World: (-181,77,265), Section: (at 11,13,9 in -12,4,16; chunk contains blocks -192,0,256 to -177,255,271), Region: (-1,0; contains chunks -32,0 to -1,31, blocks -512,0,0 to -1,255,511) Entity's Momentum: 0.00, 0.00, 0.00 Entity's Passengers: [] Entity's Vehicle: null Stacktrace: at net.minecraft.world.level.Level.guardEntityTick(Level.java:486) ~[forge-1.17.1-37.1.1_mapped_official_1.17.1.jar%2375!:?] {re:classloading,pl:accesstransformer:B} at net.minecraft.server.level.ServerLevel.lambda$tick$5(ServerLevel.java:384) ~[forge-1.17.1-37.1.1_mapped_official_1.17.1.jar%2375!:?] {re:classloading,pl:accesstransformer:B} at net.minecraft.world.level.entity.EntityTickList.forEach(EntityTickList.java:54) ~[forge-1.17.1-37.1.1_mapped_official_1.17.1.jar%2375!:?] {re:classloading} at net.minecraft.server.level.ServerLevel.tick(ServerLevel.java:365) ~[forge-1.17.1-37.1.1_mapped_official_1.17.1.jar%2375!:?] {re:classloading,pl:accesstransformer:B} -- Affected level -- Details: All players: 1 total; [ServerPlayer['Dev'/180, l='ServerLevel[New World]', x=-180.79, y=77.24, z=265.77]] Chunk stats: 2301 Level dimension: minecraft:overworld Level spawn location: World: (-176,68,256), Section: (at 0,4,0 in -11,4,16; chunk contains blocks -176,0,256 to -161,255,271), Region: (-1,0; contains chunks -32,0 to -1,31, blocks -512,0,0 to -1,255,511) Level time: 1421 game time, 1421 day time Level name: New World Level game mode: Game mode: creative (ID 1). Hardcore: false. Cheats: true Level weather: Rain time: 27318 (now: false), thunder time: 164052 (now: false) Known server brands: forge Level was modded: true Level storage version: 0x04ABD - Anvil Stacktrace: at net.minecraft.server.MinecraftServer.tickChildren(MinecraftServer.java:883) ~[forge-1.17.1-37.1.1_mapped_official_1.17.1.jar%2375!:?] {re:classloading,pl:accesstransformer:B} at net.minecraft.server.MinecraftServer.tickServer(MinecraftServer.java:819) ~[forge-1.17.1-37.1.1_mapped_official_1.17.1.jar%2375!:?] {re:classloading,pl:accesstransformer:B} at net.minecraft.client.server.IntegratedServer.tickServer(IntegratedServer.java:85) ~[forge-1.17.1-37.1.1_mapped_official_1.17.1.jar%2375!:?] {re:classloading,pl:runtimedistcleaner:A} at net.minecraft.server.MinecraftServer.runServer(MinecraftServer.java:684) ~[forge-1.17.1-37.1.1_mapped_official_1.17.1.jar%2375!:?] {re:classloading,pl:accesstransformer:B} at net.minecraft.server.MinecraftServer.lambda$spin$2(MinecraftServer.java:258) ~[forge-1.17.1-37.1.1_mapped_official_1.17.1.jar%2375!:?] {re:classloading,pl:accesstransformer:B} at java.lang.Thread.run(Thread.java:833) ~[?:?] {}

Oh I forget to remove that part hehe

@SubscribeEvent public static void gauntletGUI(final TickEvent.ClientTickEvent event) { PlayerEntity player = Minecraft.getInstance().player; if(player != null) { ItemStack stack = player.getMainHandItem(); if (keyOpenGauntlet.isDown() && stack.getItem().equals(ItemInit.INFINITY_GAUNTLET.get())) { Main.NETWORK.sendToServer(new InputMessage(stack)); } } } It works. Thanks!

In ClickTickEvent i dont know how to get the player public static void handle(InputMessage message, Supplier<NetworkEvent.Context> contextSupplier) { NetworkEvent.Context context = contextSupplier.get(); ServerPlayerEntity player = context.getSender(); ItemStack gauntlet = player.getMainHandItem(); if(gauntlet.getItem() instanceof InfinityGauntlet) { INamedContainerProvider ncp = new InfinityGauntlet.InfinityGauntletContainerProvider((InfinityGauntlet) gauntlet.getItem(), gauntlet); NetworkHooks.openGui(player, ncp); context.setPacketHandled(false); } } You were right I check the item on the server and this code works Thanks

I thought that I need the tags but not because the item contain items if you add or remove some of the item it closes the GUI and the content of the container is not updated so I finally used this code Any of the codes worked for me because when i change a Item of the inside of the container it closes and not updates, and like after the problem is only when I use the key B to open the GUI @SubscribeEvent public static void gauntletGUI(TickEvent.PlayerTickEvent event) { PlayerEntity player = event.player; ItemStack stack = event.player.getItemBySlot(EquipmentSlotType.MAINHAND); if (keyOpenGauntlet.isDown() && keyOpenGauntlet.consumeClick() && stack.getItem().equals(ItemInit.INFINITY_GAUNTLET.get())) { Main.NETWORK.sendToServer(new InputMessage(stack)); } }

Actually, yes the Item is a container that contains items so its important that But I tried and It worked Also it would be good to make the item cant be moved in the inventory when my GUI is opened is there any form to do this?

I tested it with a breakpoint and pressing B at the game You said I have to use a IForgeItemStack#equals with a ItemStack and a boolean so how?

I dont understand what you mean, can you make an example pls yeah the code is called

There is defined the heldItem https://github.com/Manueh333/Marvel-MOD/blob/1.16.5/src/main/java/manueh/marvel_themod/common/containers/InfinityGauntletContainer.java#L42 This is the one that works https://github.com/Manueh333/Marvel-MOD/blob/1.16.5/src/main/java/manueh/marvel_themod/common/items/InfinityGauntlet.java#L259-L260 This don't work https://github.com/Manueh333/Marvel-MOD/blob/1.16.5/src/main/java/manueh/marvel_themod/client/ClientEvents.java#L88 https://github.com/Manueh333/Marvel-MOD/blob/5adbb1ca06ed62bd4625c505cd9495566204670a/src/main/java/manueh/marvel_themod/core/network/message/InputMessage.java#L34-L45

Ok, so I have put this code and it doesn't work, I have to forms of opening the GUI one is on the useOn void of the item and this form work but the other form is to press 'B' but when the GUI opens it closes. If I put "return true;" in stillValid the GUI didn't close so it's obvious that the problem is there but I dont understand why @Override public boolean stillValid(PlayerEntity player) { return (player.getMainHandItem().equals(heldItem)); }

It was that, thanks

@SubscribeEvent public static void gauntletGUI(final TickEvent.PlayerTickEvent event) { PlayerEntity player = event.player; ItemStack stack = event.player.getMainHandItem(); if (keyOpenGauntlet.isDown() && keyOpenGauntlet.consumeClick() && stack.getItem().equals(ItemInit.INFINITY_GAUNTLET.get())) { Main.NETWORK.sendToServer(new InputMessage(stack)); } } This is the event public static void handle(InputMessage message, Supplier<NetworkEvent.Context> contextSupplier) { NetworkEvent.Context context = contextSupplier.get(); context.enqueueWork( () -> { ServerPlayerEntity player = context.getSender(); INamedContainerProvider ncp = new InfinityGauntlet.InfinityGauntletContainerProvider(player.getMainHandItem().getItem(), message.stack); NetworkHooks.openGui(player, ncp); } ); context.setPacketHandled(true); } This opens the GUI. So the problem is that when I press the key in this case is B the GUI opens and instantly closes. https://github.com/Manueh333/Marvel-MOD

Thanks for all, it works perfectly.

There is something I could do to resolve this?

Thanks It Worked