Bukkit

[13:58:56] [Server thread/ERROR]: Could not pass event PlayerDeathEvent to Life v1.8
org.bukkit.event.EventException
    at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:320) ~[spigot-1325.jar:git-Spigot-1325]
    at org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.java:62) ~[spigot-1325.jar:git-Spigot-1325]
    at org.bukkit.plugin.TimedRegisteredListener.callEvent(TimedRegisteredListener.java:30) ~[spigot-1325.jar:git-Spigot-1325]
    at org.bukkit.plugin.SimplePluginManager.fireEvent(SimplePluginManager.java:487) [spigot-1325.jar:git-Spigot-1325]
    at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.java:472) [spigot-1325.jar:git-Spigot-1325]
    at org.bukkit.craftbukkit.v1_7_R1.event.CraftEventFactory.callPlayerDeathEvent(CraftEventFactory.java:366) [spigot-1325.jar:git-Spigot-1325]
    at net.minecraft.server.v1_7_R1.EntityPlayer.die(EntityPlayer.java:384) [spigot-1325.jar:git-Spigot-1325]
    at net.minecraft.server.v1_7_R1.EntityLiving.damageEntity(EntityLiving.java:739) [spigot-1325.jar:git-Spigot-1325]
    at net.minecraft.server.v1_7_R1.EntityHuman.damageEntity(EntityHuman.java:751) [spigot-1325.jar:git-Spigot-1325]
    at net.minecraft.server.v1_7_R1.EntityPlayer.damageEntity(EntityPlayer.java:462) [spigot-1325.jar:git-Spigot-1325]
    at net.minecraft.server.v1_7_R1.EntityLiving.b(EntityLiving.java:878) [spigot-1325.jar:git-Spigot-1325]
    at net.minecraft.server.v1_7_R1.EntityHuman.b(EntityHuman.java:1342) [spigot-1325.jar:git-Spigot-1325]
    at net.minecraft.server.v1_7_R1.Entity.a(Entity.java:810) [spigot-1325.jar:git-Spigot-1325]
    at net.minecraft.server.v1_7_R1.EntityLiving.a(EntityLiving.java:150) [spigot-1325.jar:git-Spigot-1325]
    at net.minecraft.server.v1_7_R1.EntityPlayer.b(EntityPlayer.java:571) [spigot-1325.jar:git-Spigot-1325]
    at net.minecraft.server.v1_7_R1.PlayerConnection.a(PlayerConnection.java:430) [spigot-1325.jar:git-Spigot-1325]
    at net.minecraft.server.v1_7_R1.PacketPlayInFlying.a(SourceFile:137) [spigot-1325.jar:git-Spigot-1325]
    at net.minecraft.server.v1_7_R1.PacketPlayInPosition.handle(SourceFile:63) [spigot-1325.jar:git-Spigot-1325]
    at net.minecraft.server.v1_7_R1.NetworkManager.a(NetworkManager.java:147) [spigot-1325.jar:git-Spigot-1325]
    at net.minecraft.server.v1_7_R1.ServerConnection.c(ServerConnection.java:77) [spigot-1325.jar:git-Spigot-1325]
    at net.minecraft.server.v1_7_R1.MinecraftServer.u(MinecraftServer.java:700) [spigot-1325.jar:git-Spigot-1325]
    at net.minecraft.server.v1_7_R1.DedicatedServer.u(DedicatedServer.java:273) [spigot-1325.jar:git-Spigot-1325]
    at net.minecraft.server.v1_7_R1.MinecraftServer.t(MinecraftServer.java:562) [spigot-1325.jar:git-Spigot-1325]
    at net.minecraft.server.v1_7_R1.MinecraftServer.run(MinecraftServer.java:469) [spigot-1325.jar:git-Spigot-1325]
    at net.minecraft.server.v1_7_R1.ThreadServerApplication.run(SourceFile:617) [spigot-1325.jar:git-Spigot-1325]
Caused by: java.lang.NullPointerException
    at com.kiesd.life.PlayerListener.onDeath(PlayerListener.java:584) ~[?:?]
    at sun.reflect.GeneratedMethodAccessor672.invoke(Unknown Source) ~[?:?]
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) ~[?:1.7.0_25]
    at java.lang.reflect.Method.invoke(Unknown Source) ~[?:1.7.0_25]
    at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:318) ~[spigot-1325.jar:git-Spigot-1325]
    ... 24 more