Bukkit

[11:49:46] [Server thread/ERROR]: Could not pass event InventoryCloseEvent to Kits v2.1
org.bukkit.event.EventException
	at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:338) ~[JavaPluginLoader$1.class:git-Cauldron-MCPC-Plus-1.7.10-1.1236.06.212]
	at org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.java:62) ~[RegisteredListener.class:git-Cauldron-MCPC-Plus-1.7.10-1.1236.06.212]
	at org.bukkit.plugin.SimplePluginManager.fireEvent(SimplePluginManager.java:507) [SimplePluginManager.class:git-Cauldron-MCPC-Plus-1.7.10-1.1236.06.212]
	at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.java:492) [SimplePluginManager.class:git-Cauldron-MCPC-Plus-1.7.10-1.1236.06.212]
	at org.bukkit.craftbukkit.v1_7_R4.event.CraftEventFactory.handleInventoryCloseEvent(CraftEventFactory.java:904) [CraftEventFactory.class:git-Cauldron-MCPC-Plus-1.7.10-1.1236.06.212]
	at net.minecraft.network.NetHandlerPlayServer.func_147356_a(NetHandlerPlayServer.java:1670) [nh.class:?]
	at net.minecraft.network.play.client.C0DPacketCloseWindow.func_148833_a(C0DPacketCloseWindow.java:27) [iy.class:?]
	at net.minecraft.network.play.client.C0DPacketCloseWindow.func_148833_a(C0DPacketCloseWindow.java:42) [iy.class:?]
	at net.minecraft.network.NetworkManager.func_74428_b(NetworkManager.java:244) [ej.class:?]
	at net.minecraft.network.NetworkSystem.func_151269_c(NetworkSystem.java:173) [nc.class:?]
	at net.minecraft.server.MinecraftServer.func_71190_q(MinecraftServer.java:980) [MinecraftServer.class:?]
	at net.minecraft.server.dedicated.DedicatedServer.func_71190_q(DedicatedServer.java:423) [lt.class:?]
	at net.minecraft.server.MinecraftServer.func_71217_p(MinecraftServer.java:798) [MinecraftServer.class:?]
	at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:658) [MinecraftServer.class:?]
	at java.lang.Thread.run(Unknown Source) [?:1.7.0_75]
Caused by: java.lang.NullPointerException
	at com.dragonphase.kits.listeners.EventListener.onInventoryClose(EventListener.java:36) ~[?:?]
	at sun.reflect.GeneratedMethodAccessor133.invoke(Unknown Source) ~[?:?]
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) ~[?:1.7.0_75]
	at java.lang.reflect.Method.invoke(Unknown Source) ~[?:1.7.0_75]
	at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:334) ~[JavaPluginLoader$1.class:git-Cauldron-MCPC-Plus-1.7.10-1.1236.06.212]
	... 14 more