Could not pass InventoryCreativeEvent

So I was making a dutch police plugin where anyone with a specific permission could right-click on people and then they'll get the inventory. Everything works fine but I still get the same error sometimes.

Code:

Code:java

package main.pikathieme.eeneentwee.events;
 
import org.bukkit.ChatColor;
import org.bukkit.GameMode;
import org.bukkit.entity.Player;
import org.bukkit.event.EventHandler;
import org.bukkit.event.Listener;
import org.bukkit.event.inventory.InventoryClickEvent;
import org.bukkit.event.inventory.InventoryType;
import org.bukkit.event.player.PlayerInteractAtEntityEvent;
import org.bukkit.event.inventory.*;
 
public class openinv implements Listener {
    @EventHandler
    public void PopoInvTake(PlayerInteractAtEntityEvent e) {
        if (e.getRightClicked() instanceof Player) {
 
            Player p = e.getPlayer();
 
            if  (p.hasPermission("minetopia.invsee")) {
                Player R = (Player)e.getRightClicked();
                if (!R.hasPermission("minetopia.invdeny") || R.getGameMode() != GameMode.CREATIVE) {
                p.openInventory(R.getInventory());
                R.sendMessage(ChatColor.RED + "" + ChatColor.BOLD + "[" + ChatColor.WHITE + "" + ChatColor.BOLD + "112" + ChatColor.BLUE + "" + org.bukkit.ChatColor.BOLD + "] " + ChatColor.RED + p.getName() + ChatColor.WHITE + " kijkt in je inventory!");
                p.sendMessage(ChatColor.RED + "" + ChatColor.BOLD + "[" + ChatColor.WHITE + "" + ChatColor.BOLD + "112" + ChatColor.BLUE + "" + ChatColor.BOLD + "] " + ChatColor.WHITE + "Je kijkt nu in de inventory van " + ChatColor.RED + R.getName() + ChatColor.WHITE + "!");
                }
                else{
                    p.sendMessage(ChatColor.RED + "" + ChatColor.BOLD + "[" + ChatColor.WHITE + "" + ChatColor.BOLD + "112" + ChatColor.BLUE + "" + org.bukkit.ChatColor.BOLD + "] " + ChatColor.RED + "Je hebt geen permissie om in de inventory van " + ChatColor.WHITE + R.getName() + ChatColor.RED + " te kijken!");
                }
            }
 
        }
    }
    @EventHandler
    public void ClickEvent(InventoryClickEvent e) {
        if (e.getClickedInventory().getType().equals(InventoryType.PLAYER) && !e.getClickedInventory().equals(e.getWhoClicked().getInventory())) {
            if (!e.getWhoClicked().hasPermission("minetopia.invtake")) {
                e.setCancelled(true);
            }
        }
    }
 
}

Error:

Code:

[Server thread/ERROR]: Could not pass event InventoryCreativeEvent to CuzaCraftPika v0.1
org.bukkit.event.EventException
    at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:310) ~[spigot.jar:git-Spigot-7d15d07-c194444]
    at org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.java:62) ~[spigot.jar:git-Spigot-7d15d07-c194444]
    at org.bukkit.plugin.SimplePluginManager.fireEvent(SimplePluginManager.java:502) [spigot.jar:git-Spigot-7d15d07-c194444]
    at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.java:487) [spigot.jar:git-Spigot-7d15d07-c194444]
    at net.minecraft.server.v1_9_R1.PlayerConnection.a(PlayerConnection.java:1950) [spigot.jar:git-Spigot-7d15d07-c194444]
    at net.minecraft.server.v1_9_R1.PacketPlayInSetCreativeSlot.a(SourceFile:23) [spigot.jar:git-Spigot-7d15d07-c194444]
    at net.minecraft.server.v1_9_R1.PacketPlayInSetCreativeSlot.a(SourceFile:9) [spigot.jar:git-Spigot-7d15d07-c194444]
    at net.minecraft.server.v1_9_R1.PlayerConnectionUtils$1.run(SourceFile:13) [spigot.jar:git-Spigot-7d15d07-c194444]
    at java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source) [?:1.8.0_111]
    at java.util.concurrent.FutureTask.run(Unknown Source) [?:1.8.0_111]
    at net.minecraft.server.v1_9_R1.SystemUtils.a(SourceFile:45) [spigot.jar:git-Spigot-7d15d07-c194444]
    at net.minecraft.server.v1_9_R1.MinecraftServer.D(MinecraftServer.java:716) [spigot.jar:git-Spigot-7d15d07-c194444]
    at net.minecraft.server.v1_9_R1.DedicatedServer.D(DedicatedServer.java:400) [spigot.jar:git-Spigot-7d15d07-c194444]
    at net.minecraft.server.v1_9_R1.MinecraftServer.C(MinecraftServer.java:655) [spigot.jar:git-Spigot-7d15d07-c194444]
    at net.minecraft.server.v1_9_R1.MinecraftServer.run(MinecraftServer.java:554) [spigot.jar:git-Spigot-7d15d07-c194444]
    at java.lang.Thread.run(Unknown Source) [?:1.8.0_111]
Caused by: java.lang.NullPointerException
    at main.pikathieme.eeneentwee.events.openinv.ClickEvent(openinv.java:35) ~[?:?]
    at sun.reflect.GeneratedMethodAccessor4.invoke(Unknown Source) ~[?:?]
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) ~[?:1.8.0_111]
    at java.lang.reflect.Method.invoke(Unknown Source) ~[?:1.8.0_111]
    at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:306) ~[spigot.jar:git-Spigot-7d15d07-c194444]
    ... 15 more

I hope you guys can help

 

Follow java naming conventionS: Class names should start with an uppercase letter.

Follow Java naming conventions: variable names should start with lowercase letters.

Use == when comparing enums.

Something is null on line 35. Please post only line 35.

 

@Zombie_Striker
this is line 35
public void ClickEvent(InventoryClickEvent e) {

 

I can only think of if the player clicks outside of the inventory the

InventoryClickEvent#getClickedInventory()

Will return null and you can't get the type of the inventory.

But i dont know why it says that exact line is null.

 

I looked it up and it returns null for sure.

 

Okay, so far I editted the plugin, I don't get the error anymore. But I only have 1 problem left. Everytime I click on a player, the message displays twice. I think it's a 1.9 bug because first I made it 1.8 and then everything worked fine.
Hope you guys can help me again

 

@PikaThieme
Yeah, PlayerInteractEvent is triggered for both hands as of 1.9 Do counteract this, only check if the player clicked with the right hand.