Hey there, can someone help me with my error? Error (Move your mouse to reveal the content) Error (open) Error (close) [22:06:08 ERROR]: Could not pass event PlayerInteractEvent to Eftelaars v1.0 org.bukkit.event.EventException at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.ja va:299) ~[spigot.jar:git-Spigot-1571] at org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.jav a:62) ~[spigot.jar:git-Spigot-1571] at org.bukkit.plugin.SimplePluginManager.fireEvent(SimplePluginManager.j ava:502) [spigot.jar:git-Spigot-1571] at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.j ava:487) [spigot.jar:git-Spigot-1571] at org.bukkit.craftbukkit.v1_7_R4.event.CraftEventFactory.callPlayerInte ractEvent(CraftEventFactory.java:242) [spigot.jar:git-Spigot-1571] at net.minecraft.server.v1_7_R4.PlayerInteractManager.dig(PlayerInteract Manager.java:103) [spigot.jar:git-Spigot-1571] at net.minecraft.server.v1_7_R4.PlayerConnection.a(PlayerConnection.java :551) [spigot.jar:git-Spigot-1571] at net.minecraft.server.v1_7_R4.PacketPlayInBlockDig.a(SourceFile:53) [s pigot.jar:git-Spigot-1571] at net.minecraft.server.v1_7_R4.PacketPlayInBlockDig.handle(SourceFile:8 ) [spigot.jar:git-Spigot-1571] at net.minecraft.server.v1_7_R4.NetworkManager.a(NetworkManager.java:184 ) [spigot.jar:git-Spigot-1571] at net.minecraft.server.v1_7_R4.ServerConnection.c(ServerConnection.java :81) [spigot.jar:git-Spigot-1571] at net.minecraft.server.v1_7_R4.MinecraftServer.v(MinecraftServer.java:7 31) [spigot.jar:git-Spigot-1571] at net.minecraft.server.v1_7_R4.DedicatedServer.v(DedicatedServer.java:2 89) [spigot.jar:git-Spigot-1571] at net.minecraft.server.v1_7_R4.MinecraftServer.u(MinecraftServer.java:5 84) [spigot.jar:git-Spigot-1571] at net.minecraft.server.v1_7_R4.MinecraftServer.run(MinecraftServer.java :490) [spigot.jar:git-Spigot-1571] at net.minecraft.server.v1_7_R4.ThreadServerApplication.run(SourceFile:6 28) [spigot.jar:git-Spigot-1571] Caused by: java.lang.NullPointerException at me.dsnxsander.e.events.Interact.onInteract(Interact.java:21) ~[?:?] at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.7.0 _60] at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) ~[?:1.7.0 _60] at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) ~[?:1 .7.0_60] at java.lang.reflect.Method.invoke(Unknown Source) ~[?:1.7.0_60] at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.ja va:296) ~[spigot.jar:git-Spigot-1571] ... 15 more [22:06:08 ERROR]: Could not pass event PlayerInteractEvent to Eftelaars v1.0 org.bukkit.event.EventException at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.ja va:299) ~[spigot.jar:git-Spigot-1571] at org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.jav a:62) ~[spigot.jar:git-Spigot-1571] at org.bukkit.plugin.SimplePluginManager.fireEvent(SimplePluginManager.j ava:502) [spigot.jar:git-Spigot-1571] at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.j ava:487) [spigot.jar:git-Spigot-1571] at org.bukkit.craftbukkit.v1_7_R4.event.CraftEventFactory.callPlayerInte ractEvent(CraftEventFactory.java:242) [spigot.jar:git-Spigot-1571] at net.minecraft.server.v1_7_R4.PlayerInteractManager.dig(PlayerInteract Manager.java:103) [spigot.jar:git-Spigot-1571] at net.minecraft.server.v1_7_R4.PlayerConnection.a(PlayerConnection.java :551) [spigot.jar:git-Spigot-1571] at net.minecraft.server.v1_7_R4.PacketPlayInBlockDig.a(SourceFile:53) [s pigot.jar:git-Spigot-1571] at net.minecraft.server.v1_7_R4.PacketPlayInBlockDig.handle(SourceFile:8 ) [spigot.jar:git-Spigot-1571] at net.minecraft.server.v1_7_R4.NetworkManager.a(NetworkManager.java:184 ) [spigot.jar:git-Spigot-1571] at net.minecraft.server.v1_7_R4.ServerConnection.c(ServerConnection.java :81) [spigot.jar:git-Spigot-1571] at net.minecraft.server.v1_7_R4.MinecraftServer.v(MinecraftServer.java:7 31) [spigot.jar:git-Spigot-1571] at net.minecraft.server.v1_7_R4.DedicatedServer.v(DedicatedServer.java:2 89) [spigot.jar:git-Spigot-1571] at net.minecraft.server.v1_7_R4.MinecraftServer.u(MinecraftServer.java:5 84) [spigot.jar:git-Spigot-1571] at net.minecraft.server.v1_7_R4.MinecraftServer.run(MinecraftServer.java :490) [spigot.jar:git-Spigot-1571] at net.minecraft.server.v1_7_R4.ThreadServerApplication.run(SourceFile:6 28) [spigot.jar:git-Spigot-1571] Caused by: java.lang.NullPointerException at me.dsnxsander.e.events.StaffMenu.onInteract(StaffMenu.java:22) ~[?:?] at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.7.0 _60] at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) ~[?:1.7.0 _60] at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) ~[?:1 .7.0_60] at java.lang.reflect.Method.invoke(Unknown Source) ~[?:1.7.0_60] at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.ja va:296) ~[spigot.jar:git-Spigot-1571] ... 15 more [22:06:08 ERROR]: Could not pass event PlayerInteractEvent to Eftelaars v1.0 org.bukkit.event.EventException at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.ja va:299) ~[spigot.jar:git-Spigot-1571] at org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.jav a:62) ~[spigot.jar:git-Spigot-1571] at org.bukkit.plugin.SimplePluginManager.fireEvent(SimplePluginManager.j ava:502) [spigot.jar:git-Spigot-1571] at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.j ava:487) [spigot.jar:git-Spigot-1571] at org.bukkit.craftbukkit.v1_7_R4.event.CraftEventFactory.callPlayerInte ractEvent(CraftEventFactory.java:242) [spigot.jar:git-Spigot-1571] at net.minecraft.server.v1_7_R4.PlayerInteractManager.dig(PlayerInteract Manager.java:103) [spigot.jar:git-Spigot-1571] at net.minecraft.server.v1_7_R4.PlayerConnection.a(PlayerConnection.java :551) [spigot.jar:git-Spigot-1571] at net.minecraft.server.v1_7_R4.PacketPlayInBlockDig.a(SourceFile:53) [s pigot.jar:git-Spigot-1571] at net.minecraft.server.v1_7_R4.PacketPlayInBlockDig.handle(SourceFile:8 ) [spigot.jar:git-Spigot-1571] at net.minecraft.server.v1_7_R4.NetworkManager.a(NetworkManager.java:184 ) [spigot.jar:git-Spigot-1571] at net.minecraft.server.v1_7_R4.ServerConnection.c(ServerConnection.java :81) [spigot.jar:git-Spigot-1571] at net.minecraft.server.v1_7_R4.MinecraftServer.v(MinecraftServer.java:7 31) [spigot.jar:git-Spigot-1571] at net.minecraft.server.v1_7_R4.DedicatedServer.v(DedicatedServer.java:2 89) [spigot.jar:git-Spigot-1571] at net.minecraft.server.v1_7_R4.MinecraftServer.u(MinecraftServer.java:5 84) [spigot.jar:git-Spigot-1571] at net.minecraft.server.v1_7_R4.MinecraftServer.run(MinecraftServer.java :490) [spigot.jar:git-Spigot-1571] at net.minecraft.server.v1_7_R4.ThreadServerApplication.run(SourceFile:6 28) [spigot.jar:git-Spigot-1571] Caused by: java.lang.NullPointerException at me.dsnxsander.e.events.Power.onInteract(Power.java:33) ~[?:?] at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.7.0 _60] at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) ~[?:1.7.0 _60] at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) ~[?:1 .7.0_60] at java.lang.reflect.Method.invoke(Unknown Source) ~[?:1.7.0_60] at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.ja va:296) ~[spigot.jar:git-Spigot-1571] ... 15 more [22:06:08 ERROR]: Could not pass event PlayerInteractEvent to Eftelaars v1.0 org.bukkit.event.EventException at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.ja va:299) ~[spigot.jar:git-Spigot-1571] at org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.jav a:62) ~[spigot.jar:git-Spigot-1571] at org.bukkit.plugin.SimplePluginManager.fireEvent(SimplePluginManager.j ava:502) [spigot.jar:git-Spigot-1571] at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.j ava:487) [spigot.jar:git-Spigot-1571] at org.bukkit.craftbukkit.v1_7_R4.event.CraftEventFactory.callPlayerInte ractEvent(CraftEventFactory.java:242) [spigot.jar:git-Spigot-1571] at net.minecraft.server.v1_7_R4.PlayerInteractManager.dig(PlayerInteract Manager.java:103) [spigot.jar:git-Spigot-1571] at net.minecraft.server.v1_7_R4.PlayerConnection.a(PlayerConnection.java :551) [spigot.jar:git-Spigot-1571] at net.minecraft.server.v1_7_R4.PacketPlayInBlockDig.a(SourceFile:53) [s pigot.jar:git-Spigot-1571] at net.minecraft.server.v1_7_R4.PacketPlayInBlockDig.handle(SourceFile:8 ) [spigot.jar:git-Spigot-1571] at net.minecraft.server.v1_7_R4.NetworkManager.a(NetworkManager.java:184 ) [spigot.jar:git-Spigot-1571] at net.minecraft.server.v1_7_R4.ServerConnection.c(ServerConnection.java :81) [spigot.jar:git-Spigot-1571] at net.minecraft.server.v1_7_R4.MinecraftServer.v(MinecraftServer.java:7 31) [spigot.jar:git-Spigot-1571] at net.minecraft.server.v1_7_R4.DedicatedServer.v(DedicatedServer.java:2 89) [spigot.jar:git-Spigot-1571] at net.minecraft.server.v1_7_R4.MinecraftServer.u(MinecraftServer.java:5 84) [spigot.jar:git-Spigot-1571] at net.minecraft.server.v1_7_R4.MinecraftServer.run(MinecraftServer.java :490) [spigot.jar:git-Spigot-1571] at net.minecraft.server.v1_7_R4.ThreadServerApplication.run(SourceFile:6 28) [spigot.jar:git-Spigot-1571] Caused by: java.lang.NullPointerException at me.dsnxsander.e.Main.onInteract(Main.java:81) ~[?:?] at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.7.0 _60] at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) ~[?:1.7.0 _60] at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) ~[?:1 .7.0_60] at java.lang.reflect.Method.invoke(Unknown Source) ~[?:1.7.0_60] at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.ja va:296) ~[spigot.jar:git-Spigot-1571] ... 15 more > Code on line 21 in the class Interaction (Error): Code: if(e.getItem().getItemMeta().getDisplayName() == ("§9Navigatie")){ if(e.getAction() == Action.RIGHT_CLICK_AIR || e.getAction() == Action.RIGHT_CLICK_BLOCK){ Inventory inv = Bukkit.createInventory(null, 9, "§9Navigatie"); inv.setItem(3, ItemStacks.Sprookjesbos()); inv.setItem(5, ItemStacks.Park()); p.openInventory(inv); p.playSound(p.getLocation(), Sound.SUCCESSFUL_HIT, 1, 1); } } else { } }