I don't understand this error can anyone explain it to me? I get it when i press the key that should in theory, open up a gui.

[17:31:04] [Client thread/FATAL]: Unreported exception thrown!

java.lang.NullPointerException

at net.minecraft.crash.CrashReportCategory.firstTwoElementsOfStackTraceMatch(Unknown Source) ~[CrashReportCategory.class:?]

at net.minecraft.crash.CrashReport.makeCategoryDepth(Unknown Source) ~[CrashReport.class:?]

at net.minecraft.crash.CrashReport.makeCategory(Unknown Source) ~[CrashReport.class:?]

at net.minecraft.client.renderer.EntityRenderer.updateCameraAndRender(Unknown Source) ~[EntityRenderer.class:?]

at net.minecraft.client.Minecraft.runGameLoop(Unknown Source) ~[Minecraft.class:?]

at net.minecraft.client.Minecraft.run(Unknown Source) [Minecraft.class:?]

at net.minecraft.client.main.Main.main(Unknown Source) [Main.class:?]

at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.8.0_51]

at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[?:1.8.0_51]

at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.8.0_51]

at java.lang.reflect.Method.invoke(Method.java:497) ~[?:1.8.0_51]

at net.minecraft.launchwrapper.Launch.launch(Launch.java:135) [launchwrapper-1.12.jar:?]

at net.minecraft.launchwrapper.Launch.main(Launch.java:28) [launchwrapper-1.12.jar:?]

at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.8.0_51]

at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[?:1.8.0_51]

at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.8.0_51]

at java.lang.reflect.Method.invoke(Method.java:497) ~[?:1.8.0_51]

at net.minecraftforge.gradle.GradleStartCommon.launch(Unknown Source) [start/:?]

at GradleStart.main(Unknown Source) [start/:?]

[17:31:04] [Client thread/INFO] [sTDOUT]: [net.minecraft.init.Bootstrap:printToSYSOUT:-1]: ---- Minecraft Crash Report ----

// Don't do that.

 

Time: 16/09/15 17:31

Description: Unexpected error

 

java.lang.NullPointerException: Unexpected error

at net.minecraft.crash.CrashReportCategory.firstTwoElementsOfStackTraceMatch(Unknown Source)

at net.minecraft.crash.CrashReport.makeCategoryDepth(Unknown Source)

at net.minecraft.crash.CrashReport.makeCategory(Unknown Source)

at net.minecraft.client.renderer.EntityRenderer.updateCameraAndRender(Unknown Source)

at net.minecraft.client.Minecraft.runGameLoop(Unknown Source)

at net.minecraft.client.Minecraft.run(Unknown Source)

at net.minecraft.client.main.Main.main(Unknown Source)

at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)

at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)

at java.lang.reflect.Method.invoke(Method.java:497)

at net.minecraft.launchwrapper.Launch.launch(Launch.java:135)

at net.minecraft.launchwrapper.Launch.main(Launch.java:28)

at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)

at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)

at java.lang.reflect.Method.invoke(Method.java:497)

at net.minecraftforge.gradle.GradleStartCommon.launch(Unknown Source)

at GradleStart.main(Unknown Source)

 

 

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

---------------------------------------------------------------------------------------

 

Show your code.

 

package com.zombiesurvival.client.utils;

import org.lwjgl.input.Keyboard;

import net.minecraft.client.settings.KeyBinding;
import net.minecraftforge.fml.client.registry.ClientRegistry;

public class KeyBindings {
    public static KeyBinding openGUI;
    public static KeyBinding shoot;
    public static KeyBinding aim;
    public static KeyBinding chat;
    public static KeyBinding reload;
    public static void init() {
    openGUI = new KeyBinding("key.openGUI", Keyboard.KEY_Z, "key.test.zombiesurvival");
    ClientRegistry.registerKeyBinding(openGUI);
    
    }
}

package com.zombiesurvival.client.utils;


import com.zombiesurvival.Main;

import com.zombiesurvival.client.gui.inventory.GuiZS_PlayerInventory;
import com.zombiesurvival.common.handlers.ModGuiHandler;

import net.minecraft.client.Minecraft;
import net.minecraft.client.entity.EntityPlayerSP;
import net.minecraft.world.World;
import net.minecraftforge.fml.common.eventhandler.SubscribeEvent;
import net.minecraftforge.fml.common.gameevent.InputEvent;
public class KeyInputHandler {
@SubscribeEvent
public void onKeyInput(InputEvent.KeyInputEvent event) 
{
  if(KeyBindings.openGUI.isPressed())
  {
  EntityPlayerSP player = Minecraft.getMinecraft().thePlayer;
  World world = Minecraft.getMinecraft().theWorld;
  Object MainLol = Main.instance;
  int x = (int)player.posX;
  int y = (int)player.posY;
  int z = (int)player.posZ;
  player.openGui(MainLol, ModGuiHandler.PLAYERIVENTORY, world, x, y, z);
  }
}
}

package com.zombiesurvival.common.handlers;

import com.zombiesurvival.client.gui.inventory.GuiZS_PlayerInventory;

import com.zombiesurvival.client.gui.inventory.ContainerZS_PlayerInventory;

import net.minecraft.entity.player.EntityPlayer;
import net.minecraft.world.World;
import net.minecraftforge.fml.common.network.IGuiHandler;

public class ModGuiHandler implements IGuiHandler
{
public static final int PLAYERIVENTORY = 0;
@Override
public Object getServerGuiElement(int ID, EntityPlayer player, World world, int x, int y, int z) 
{
        switch(ID)
        {
        case 0: return new ContainerZS_PlayerInventory(player);
        }
	return null;
}

@Override
public Object getClientGuiElement(int ID, EntityPlayer player, World world, int x, int y, int z)
{
	  switch(ID)
        {
        case 0: return new GuiZS_PlayerInventory(player);
        }
	return null;
}

}