deathmatch

11:14:59 [SEVERE] Could not pass event PlayerDeathEvent to SurvivalGames v1.0.4
org.bukkit.event.EventException
	at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:427)
	at org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.java:62)
	at org.bukkit.plugin.SimplePluginManager.fireEvent(SimplePluginManager.java:477)
	at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.java:462)
	at org.bukkit.craftbukkit.v1_6_R2.event.CraftEventFactory.callPlayerDeathEvent(CraftEventFactory.java:344)
	at net.minecraft.server.v1_6_R2.EntityPlayer.die(EntityPlayer.java:307)
	at net.minecraft.server.v1_6_R2.EntityLiving.damageEntity(EntityLiving.java:709)
	at net.minecraft.server.v1_6_R2.EntityHuman.damageEntity(EntityHuman.java:714)
	at net.minecraft.server.v1_6_R2.EntityPlayer.damageEntity(EntityPlayer.java:378)
	at net.minecraft.server.v1_6_R2.Entity.z(Entity.java:353)
	at net.minecraft.server.v1_6_R2.Entity.x(Entity.java:318)
	at net.minecraft.server.v1_6_R2.EntityLiving.x(EntityLiving.java:145)
	at net.minecraft.server.v1_6_R2.Entity.l_(Entity.java:230)
	at net.minecraft.server.v1_6_R2.EntityLiving.l_(EntityLiving.java:1242)
	at net.minecraft.server.v1_6_R2.EntityHuman.l_(EntityHuman.java:157)
	at net.minecraft.server.v1_6_R2.EntityPlayer.h(EntityPlayer.java:223)
	at net.minecraft.server.v1_6_R2.PlayerConnection.a(PlayerConnection.java:343)
	at net.minecraft.server.v1_6_R2.Packet10Flying.handle(SourceFile:136)
	at net.minecraft.server.v1_6_R2.NetworkManager.b(NetworkManager.java:296)
	at net.minecraft.server.v1_6_R2.PlayerConnection.e(PlayerConnection.java:116)
	at net.minecraft.server.v1_6_R2.ServerConnection.b(SourceFile:37)
	at net.minecraft.server.v1_6_R2.DedicatedServerConnection.b(SourceFile:30)
	at net.minecraft.server.v1_6_R2.MinecraftServer.t(MinecraftServer.java:590)
	at net.minecraft.server.v1_6_R2.DedicatedServer.t(DedicatedServer.java:226)
	at net.minecraft.server.v1_6_R2.MinecraftServer.s(MinecraftServer.java:486)
	at net.minecraft.server.v1_6_R2.MinecraftServer.run(MinecraftServer.java:419)
	at net.minecraft.server.v1_6_R2.ThreadServerApplication.run(SourceFile:582)
Caused by: java.lang.NullPointerException
	at net.shockverse.survivalgames.GameManager.killPlayer(GameManager.java:856)
	at net.shockverse.survivalgames.listeners.EntityListener.onPlayerDeath(EntityListener.java:116)
	at sun.reflect.GeneratedMethodAccessor24.invoke(Unknown Source)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:606)
	at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:425)
	... 26 more