[00:33:33 ERROR]: Could not pass event PlayerDeathEvent to BattleTracker v2.5.9.2
org.bukkit.event.EventException
        at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:308) ~[Spigot.jar:git-Spigot-455072c-43ab266]
        at org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.java:62) ~[Spigot.jar:git-Spigot-455072c-43ab266]
        at org.bukkit.plugin.SimplePluginManager.fireEvent(SimplePluginManager.java:502) [Spigot.jar:git-Spigot-455072c-43ab266]
        at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.java:487) [Spigot.jar:git-Spigot-455072c-43ab266]
        at org.bukkit.craftbukkit.v1_10_R1.event.CraftEventFactory.callPlayerDeathEvent(CraftEventFactory.java:409) [Spigot.jar:git-Spigot-455072c-43ab266]
        at net.minecraft.server.v1_10_R1.EntityPlayer.die(EntityPlayer.java:409) [Spigot.jar:git-Spigot-455072c-43ab266]
        at net.minecraft.server.v1_10_R1.EntityLiving.damageEntity(EntityLiving.java:911) [Spigot.jar:git-Spigot-455072c-43ab266]
        at net.minecraft.server.v1_10_R1.EntityHuman.damageEntity(EntityHuman.java:772) [Spigot.jar:git-Spigot-455072c-43ab266]
        at net.minecraft.server.v1_10_R1.EntityPlayer.damageEntity(EntityPlayer.java:500) [Spigot.jar:git-Spigot-455072c-43ab266]
        at net.minecraft.server.v1_10_R1.EntityHuman.attack(EntityHuman.java:1009) [Spigot.jar:git-Spigot-455072c-43ab266]
        at net.minecraft.server.v1_10_R1.EntityPlayer.attack(EntityPlayer.java:1136) [Spigot.jar:git-Spigot-455072c-43ab266]
        at net.minecraft.server.v1_10_R1.PlayerConnection.a(PlayerConnection.java:1578) [Spigot.jar:git-Spigot-455072c-43ab266]
        at net.minecraft.server.v1_10_R1.PacketPlayInUseEntity.a(SourceFile:68) [Spigot.jar:git-Spigot-455072c-43ab266]
        at net.minecraft.server.v1_10_R1.PacketPlayInUseEntity.a(SourceFile:12) [Spigot.jar:git-Spigot-455072c-43ab266]
        at net.minecraft.server.v1_10_R1.PlayerConnectionUtils$1.run(SourceFile:13) [Spigot.jar:git-Spigot-455072c-43ab266]
        at java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source) [?:1.8.0_102]
        at java.util.concurrent.FutureTask.run(Unknown Source) [?:1.8.0_102]
        at net.minecraft.server.v1_10_R1.SystemUtils.a(SourceFile:45) [Spigot.jar:git-Spigot-455072c-43ab266]
        at net.minecraft.server.v1_10_R1.MinecraftServer.D(MinecraftServer.java:732) [Spigot.jar:git-Spigot-455072c-43ab266]
        at net.minecraft.server.v1_10_R1.DedicatedServer.D(DedicatedServer.java:400) [Spigot.jar:git-Spigot-455072c-43ab266]
        at net.minecraft.server.v1_10_R1.MinecraftServer.C(MinecraftServer.java:668) [Spigot.jar:git-Spigot-455072c-43ab266]
        at net.minecraft.server.v1_10_R1.MinecraftServer.run(MinecraftServer.java:567) [Spigot.jar:git-Spigot-455072c-43ab266]
        at java.lang.Thread.run(Unknown Source) [?:1.8.0_102]
Caused by: java.lang.NullPointerException
        at mc.alk.tracker.controllers.MessageController.getPvPMessage(MessageController.java:141) ~[?:?]
        at mc.alk.tracker.listeners.BTEntityListener.getPvPDeathMessage(BTEntityListener.java:287) ~[?:?]
        at mc.alk.tracker.listeners.BTEntityListener.ede(BTEntityListener.java:180) ~[?:?]
        at mc.alk.tracker.listeners.BTEntityListener.onPlayerDeath(BTEntityListener.java:66) ~[?:?]
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.8.0_102]
        at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) ~[?:1.8.0_102]
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) ~[?:1.8.0_102]
        at java.lang.reflect.Method.invoke(Unknown Source) ~[?:1.8.0_102]
        at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:304) ~[Spigot.jar:git-Spigot-455072c-43ab266]
        ... 22 more