[19:48:46] [Server thread/ERROR]: Could not pass event EntityDeathEvent to RPGPlayerLeveling v3.4.1
org.bukkit.event.EventException
	at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:310) ~[spigot.jar:git-Spigot-e6f93f4-d884ab3]
	at org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.java:62) ~[spigot.jar:git-Spigot-e6f93f4-d884ab3]
	at org.bukkit.plugin.SimplePluginManager.fireEvent(SimplePluginManager.java:502) [spigot.jar:git-Spigot-e6f93f4-d884ab3]
	at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.java:487) [spigot.jar:git-Spigot-e6f93f4-d884ab3]
	at org.bukkit.craftbukkit.v1_9_R1.event.CraftEventFactory.callEntityDeathEvent(CraftEventFactory.java:391) [spigot.jar:git-Spigot-e6f93f4-d884ab3]
	at net.minecraft.server.v1_9_R1.EntityLiving.die(EntityLiving.java:983) [spigot.jar:git-Spigot-e6f93f4-d884ab3]
	at net.minecraft.server.v1_9_R1.EntityZombie.die(EntityZombie.java:549) [spigot.jar:git-Spigot-e6f93f4-d884ab3]
	at net.minecraft.server.v1_9_R1.EntityLiving.damageEntity(EntityLiving.java:900) [spigot.jar:git-Spigot-e6f93f4-d884ab3]
	at net.minecraft.server.v1_9_R1.EntityMonster.damageEntity(EntityMonster.java:44) [spigot.jar:git-Spigot-e6f93f4-d884ab3]
	at net.minecraft.server.v1_9_R1.EntityZombie.damageEntity(EntityZombie.java:179) [spigot.jar:git-Spigot-e6f93f4-d884ab3]
	at net.minecraft.server.v1_9_R1.EntityPigZombie.damageEntity(SourceFile:148) [spigot.jar:git-Spigot-e6f93f4-d884ab3]
	at net.minecraft.server.v1_9_R1.EntityHuman.attack(EntityHuman.java:999) [spigot.jar:git-Spigot-e6f93f4-d884ab3]
	at net.minecraft.server.v1_9_R1.EntityPlayer.attack(EntityPlayer.java:1129) [spigot.jar:git-Spigot-e6f93f4-d884ab3]
	at net.minecraft.server.v1_9_R1.PlayerConnection.a(PlayerConnection.java:1577) [spigot.jar:git-Spigot-e6f93f4-d884ab3]
	at net.minecraft.server.v1_9_R1.PacketPlayInUseEntity.a(SourceFile:68) [spigot.jar:git-Spigot-e6f93f4-d884ab3]
	at net.minecraft.server.v1_9_R1.PacketPlayInUseEntity.a(SourceFile:12) [spigot.jar:git-Spigot-e6f93f4-d884ab3]
	at net.minecraft.server.v1_9_R1.PlayerConnectionUtils$1.run(SourceFile:13) [spigot.jar:git-Spigot-e6f93f4-d884ab3]
	at java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source) [?:1.8.0_121]
	at java.util.concurrent.FutureTask.run(Unknown Source) [?:1.8.0_121]
	at net.minecraft.server.v1_9_R1.SystemUtils.a(SourceFile:45) [spigot.jar:git-Spigot-e6f93f4-d884ab3]
	at net.minecraft.server.v1_9_R1.MinecraftServer.D(MinecraftServer.java:721) [spigot.jar:git-Spigot-e6f93f4-d884ab3]
	at net.minecraft.server.v1_9_R1.DedicatedServer.D(DedicatedServer.java:400) [spigot.jar:git-Spigot-e6f93f4-d884ab3]
	at net.minecraft.server.v1_9_R1.MinecraftServer.C(MinecraftServer.java:660) [spigot.jar:git-Spigot-e6f93f4-d884ab3]
	at net.minecraft.server.v1_9_R1.MinecraftServer.run(MinecraftServer.java:559) [spigot.jar:git-Spigot-e6f93f4-d884ab3]
	at java.lang.Thread.run(Unknown Source) [?:1.8.0_121]
Caused by: java.lang.NullPointerException
	at me.baks.PartySystem.PlManager.getExp(PlManager.java:241) ~[?:?]
	at me.baks.rpl.listener.EventListener.onDeathEntity(EventListener.java:634) ~[?:?]
	at sun.reflect.GeneratedMethodAccessor773.invoke(Unknown Source) ~[?:?]
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) ~[?:1.8.0_121]
	at java.lang.reflect.Method.invoke(Unknown Source) ~[?:1.8.0_121]
	at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:306) ~[spigot.jar:git-Spigot-e6f93f4-d884ab3]
	... 24 more