java.lang.AssertionError: TRAP
        at net.minecraft.server.v1_14_R1.ItemStack.checkEmpty(ItemStack.java:109)
        at net.minecraft.server.v1_14_R1.ItemStack.setCount(ItemStack.java:918)
        at net.minecraft.server.v1_14_R1.ItemStack.add(ItemStack.java:922)
        at net.minecraft.server.v1_14_R1.ItemStack.subtract(ItemStack.java:926)
        at net.minecraft.server.v1_14_R1.ItemBlock.a(ItemBlock.java:64)
        at net.minecraft.server.v1_14_R1.ItemBlock.a(ItemBlock.java:24)
        at net.minecraft.server.v1_14_R1.ItemStack.placeItem(ItemStack.java:185)
        at net.minecraft.server.v1_14_R1.PlayerInteractManager.a(PlayerInteractManager.java:499)
        at net.minecraft.server.v1_14_R1.PlayerConnection.a(PlayerConnection.java:1455)
        at net.minecraft.server.v1_14_R1.PacketPlayInUseItem.a(PacketPlayInUseItem.java:27)
        at net.minecraft.server.v1_14_R1.PacketPlayInUseItem.a(PacketPlayInUseItem.java:5)
        at net.minecraft.server.v1_14_R1.PlayerConnectionUtils.lambda$ensureMainThread$0(PlayerConnectionUtils.java:23)
        at net.minecraft.server.v1_14_R1.TickTask.run(SourceFile:18)
        at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeTask(IAsyncTaskHandler.java:136)
        at net.minecraft.server.v1_14_R1.IAsyncTaskHandlerReentrant.executeTask(SourceFile:23)
        at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.executeNext(IAsyncTaskHandler.java:109)
        at net.minecraft.server.v1_14_R1.MinecraftServer.aX(MinecraftServer.java:1055)
        at net.minecraft.server.v1_14_R1.MinecraftServer.executeNext(MinecraftServer.java:1048)
        at net.minecraft.server.v1_14_R1.IAsyncTaskHandler.awaitTasks(IAsyncTaskHandler.java:119)
        at net.minecraft.server.v1_14_R1.MinecraftServer.a(MinecraftServer.java:1114)
        at net.minecraft.server.v1_14_R1.MinecraftServer.run(MinecraftServer.java:951)
        at java.lang.Thread.run(Thread.java:748)