Error

01:16:11 [SEVERE] Could not pass event PlayerQuitEvent to SurvivalGames
org.bukkit.event.EventException
	at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:304)
	at org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.java:62)
	at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.java:460)
	at net.minecraft.server.ServerConfigurationManager.disconnect(ServerConfigurationManager.java:179)
	at net.minecraft.server.NetServerHandler.a(NetServerHandler.java:698)
	at net.minecraft.server.NetworkManager.b(NetworkManager.java:234)
	at net.minecraft.server.NetServerHandler.a(NetServerHandler.java:113)
	at net.minecraft.server.NetworkListenThread.a(NetworkListenThread.java:78)
	at net.minecraft.server.MinecraftServer.w(MinecraftServer.java:567)
	at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:459)
	at net.minecraft.server.ThreadServerApplication.run(SourceFile:492)
Caused by: java.lang.NullPointerException
	at com.skitscape.survivalgames.stats.StatsManager.playerDied(StatsManager.java:100)
	at com.skitscape.survivalgames.Game.killPlayer(Game.java:270)
	at com.skitscape.survivalgames.Events.LogoutEvent.PlayerLoggout(LogoutEvent.java:21)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
	at java.lang.reflect.Method.invoke(Method.java:597)
	at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:302)
	... 10 more