[20:02:27] [Server thread/ERROR]: Could not pass event InventoryClickEvent to PvpDuels v0.5 Minox
org.bukkit.event.EventException
	at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:310) ~[start1.8.8.jar:git-Spigot-6c9b0a1-de5c261]
	at org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.java:62) ~[start1.8.8.jar:git-Spigot-6c9b0a1-de5c261]
	at org.bukkit.plugin.SimplePluginManager.fireEvent(SimplePluginManager.java:502) [start1.8.8.jar:git-Spigot-6c9b0a1-de5c261]
	at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.java:487) [start1.8.8.jar:git-Spigot-6c9b0a1-de5c261]
	at net.minecraft.server.v1_8_R3.PlayerConnection.a(PlayerConnection.java:1630) [start1.8.8.jar:git-Spigot-6c9b0a1-de5c261]
	at net.minecraft.server.v1_8_R3.PacketPlayInWindowClick.a(SourceFile:31) [start1.8.8.jar:git-Spigot-6c9b0a1-de5c261]
	at net.minecraft.server.v1_8_R3.PacketPlayInWindowClick.a(SourceFile:9) [start1.8.8.jar:git-Spigot-6c9b0a1-de5c261]
	at net.minecraft.server.v1_8_R3.PlayerConnectionUtils$1.run(SourceFile:13) [start1.8.8.jar:git-Spigot-6c9b0a1-de5c261]
	at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) [?:1.8.0_40]
	at java.util.concurrent.FutureTask.run(FutureTask.java:266) [?:1.8.0_40]
	at net.minecraft.server.v1_8_R3.SystemUtils.a(SourceFile:44) [start1.8.8.jar:git-Spigot-6c9b0a1-de5c261]
	at net.minecraft.server.v1_8_R3.MinecraftServer.B(MinecraftServer.java:714) [start1.8.8.jar:git-Spigot-6c9b0a1-de5c261]
	at net.minecraft.server.v1_8_R3.DedicatedServer.B(DedicatedServer.java:374) [start1.8.8.jar:git-Spigot-6c9b0a1-de5c261]
	at net.minecraft.server.v1_8_R3.MinecraftServer.A(MinecraftServer.java:653) [start1.8.8.jar:git-Spigot-6c9b0a1-de5c261]
	at net.minecraft.server.v1_8_R3.MinecraftServer.run(MinecraftServer.java:556) [start1.8.8.jar:git-Spigot-6c9b0a1-de5c261]
	at java.lang.Thread.run(Thread.java:745) [?:1.8.0_40]
Caused by: java.lang.ArrayIndexOutOfBoundsException: 270
	at net.minecraft.server.v1_8_R3.PlayerInventory.setItem(PlayerInventory.java:361) ~[start1.8.8.jar:git-Spigot-6c9b0a1-de5c261]
	at org.bukkit.craftbukkit.v1_8_R3.inventory.CraftInventory.setItem(CraftInventory.java:79) ~[start1.8.8.jar:git-Spigot-6c9b0a1-de5c261]
	at org.bukkit.craftbukkit.v1_8_R3.inventory.CraftInventoryPlayer.setItem(CraftInventoryPlayer.java:39) ~[start1.8.8.jar:git-Spigot-6c9b0a1-de5c261]
	at me.darkreval.pvpduels.ArenaManager.startArena(ArenaManager.java:195) ~[?:?]
	at me.darkreval.pvpduels.Listeners.InventoryListener.onClick(InventoryListener.java:43) ~[?:?]
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.8.0_40]
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[?:1.8.0_40]
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.8.0_40]
	at java.lang.reflect.Method.invoke(Method.java:497) ~[?:1.8.0_40]
	at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:306) ~[start1.8.8.jar:git-Spigot-6c9b0a1-de5c261]
	... 15 more