[01:46:26] [Server thread/ERROR]: Could not pass event InventoryCloseEvent to RockPaperScissors v${project.version}
org.bukkit.event.EventException
	at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:310) ~[spigot.jar:git-Spigot-c6871e2-0cd0397]
	at org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.java:62) ~[spigot.jar:git-Spigot-c6871e2-0cd0397]
	at org.bukkit.plugin.SimplePluginManager.fireEvent(SimplePluginManager.java:502) [spigot.jar:git-Spigot-c6871e2-0cd0397]
	at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.java:487) [spigot.jar:git-Spigot-c6871e2-0cd0397]
	at org.bukkit.craftbukkit.v1_9_R2.event.CraftEventFactory.handleInventoryCloseEvent(CraftEventFactory.java:871) [spigot.jar:git-Spigot-c6871e2-0cd0397]
	at net.minecraft.server.v1_9_R2.PlayerConnection.a(PlayerConnection.java:1627) [spigot.jar:git-Spigot-c6871e2-0cd0397]
	at net.minecraft.server.v1_9_R2.PacketPlayInCloseWindow.a(PacketPlayInCloseWindow.java:18) [spigot.jar:git-Spigot-c6871e2-0cd0397]
	at net.minecraft.server.v1_9_R2.PacketPlayInCloseWindow.a(PacketPlayInCloseWindow.java:1) [spigot.jar:git-Spigot-c6871e2-0cd0397]
	at net.minecraft.server.v1_9_R2.PlayerConnectionUtils$1.run(SourceFile:13) [spigot.jar:git-Spigot-c6871e2-0cd0397]
	at java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source) [?:1.8.0_141]
	at java.util.concurrent.FutureTask.run(Unknown Source) [?:1.8.0_141]
	at net.minecraft.server.v1_9_R2.SystemUtils.a(SourceFile:45) [spigot.jar:git-Spigot-c6871e2-0cd0397]
	at net.minecraft.server.v1_9_R2.MinecraftServer.D(MinecraftServer.java:726) [spigot.jar:git-Spigot-c6871e2-0cd0397]
	at net.minecraft.server.v1_9_R2.DedicatedServer.D(DedicatedServer.java:399) [spigot.jar:git-Spigot-c6871e2-0cd0397]
	at net.minecraft.server.v1_9_R2.MinecraftServer.C(MinecraftServer.java:665) [spigot.jar:git-Spigot-c6871e2-0cd0397]
	at net.minecraft.server.v1_9_R2.MinecraftServer.run(MinecraftServer.java:564) [spigot.jar:git-Spigot-c6871e2-0cd0397]
	at java.lang.Thread.run(Unknown Source) [?:1.8.0_141]
Caused by: java.lang.NullPointerException
	at me.banbeucmas.rockpaperscissors.listeners.GameplayListener.exit(GameplayListener.java:260) ~[?:?]
	at me.banbeucmas.rockpaperscissors.listeners.GameplayListener.onClose(GameplayListener.java:202) ~[?:?]
	at sun.reflect.GeneratedMethodAccessor174.invoke(Unknown Source) ~[?:?]
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) ~[?:1.8.0_141]
	at java.lang.reflect.Method.invoke(Unknown Source) ~[?:1.8.0_141]
	at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:306) ~[spigot.jar:git-Spigot-c6871e2-0cd0397]
	... 16 more