zvp error 2

[00:02:06] [Server thread/WARN]: [ZombieVsPlayer] Task #444 for ZombieVsPlayer v2.3.6 generated an exception
java.lang.NullPointerException
	at me.Aubli.ZvP.Game.ZvPPlayer.addKill(ZvPPlayer.java:207) ~[?:?]
	at me.Aubli.ZvP.Listeners.DeathListener$1.run(DeathListener.java:42) ~[?:?]
	at org.bukkit.craftbukkit.v1_8_R2.scheduler.CraftTask.run(CraftTask.java:53) ~[craftbukkit.jar:git-Bukkit-22ee419]
	at org.bukkit.craftbukkit.v1_8_R2.scheduler.CraftScheduler.mainThreadHeartbeat(CraftScheduler.java:349) [craftbukkit.jar:git-Bukkit-22ee419]
	at net.minecraft.server.v1_8_R2.MinecraftServer.A(MinecraftServer.java:677) [craftbukkit.jar:git-Bukkit-22ee419]
	at net.minecraft.server.v1_8_R2.DedicatedServer.A(DedicatedServer.java:336) [craftbukkit.jar:git-Bukkit-22ee419]
	at net.minecraft.server.v1_8_R2.MinecraftServer.z(MinecraftServer.java:626) [craftbukkit.jar:git-Bukkit-22ee419]
	at net.minecraft.server.v1_8_R2.MinecraftServer.run(MinecraftServer.java:534) [craftbukkit.jar:git-Bukkit-22ee419]
	at java.lang.Thread.run(Unknown Source) [?:1.8.0_31]