[18:54:27] [Server thread/ERROR]: Could not pass event EntityDamageByEntityEvent to Duels v1.0 CraftMc.pl
org.bukkit.event.EventException
	at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:302) ~[fix.jar:git-PaperSpigot-"4c7641d"]
	at co.aikar.timings.TimedEventExecutor.execute(TimedEventExecutor.java:78) ~[fix.jar:git-PaperSpigot-"4c7641d"]
	at org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.java:62) ~[fix.jar:git-PaperSpigot-"4c7641d"]
	at org.bukkit.plugin.SimplePluginManager.fireEvent(SimplePluginManager.java:517) [fix.jar:git-PaperSpigot-"4c7641d"]
	at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.java:502) [fix.jar:git-PaperSpigot-"4c7641d"]
	at org.bukkit.craftbukkit.v1_8_R3.event.CraftEventFactory.callEvent(CraftEventFactory.java:87) [fix.jar:git-PaperSpigot-"4c7641d"]
	at org.bukkit.craftbukkit.v1_8_R3.event.CraftEventFactory.callEntityDamageEvent(CraftEventFactory.java:553) [fix.jar:git-PaperSpigot-"4c7641d"]
	at org.bukkit.craftbukkit.v1_8_R3.event.CraftEventFactory.handleEntityDamageEvent(CraftEventFactory.java:466) [fix.jar:git-PaperSpigot-"4c7641d"]
	at org.bukkit.craftbukkit.v1_8_R3.event.CraftEventFactory.handleLivingEntityDamageEvent(CraftEventFactory.java:585) [fix.jar:git-PaperSpigot-"4c7641d"]
	at net.minecraft.server.v1_8_R3.EntityLiving.d(EntityLiving.java:1112) [fix.jar:git-PaperSpigot-"4c7641d"]
	at net.minecraft.server.v1_8_R3.EntityHuman.d(EntityHuman.java:860) [fix.jar:git-PaperSpigot-"4c7641d"]
	at net.minecraft.server.v1_8_R3.EntityLiving.damageEntity(EntityLiving.java:748) [fix.jar:git-PaperSpigot-"4c7641d"]
	at net.minecraft.server.v1_8_R3.EntityHuman.damageEntity(EntityHuman.java:801) [fix.jar:git-PaperSpigot-"4c7641d"]
	at net.minecraft.server.v1_8_R3.EntityPlayer.damageEntity(EntityPlayer.java:504) [fix.jar:git-PaperSpigot-"4c7641d"]
	at net.minecraft.server.v1_8_R3.EntityHuman.attack(EntityHuman.java:1002) [fix.jar:git-PaperSpigot-"4c7641d"]
	at net.minecraft.server.v1_8_R3.EntityPlayer.attack(EntityPlayer.java:1086) [fix.jar:git-PaperSpigot-"4c7641d"]
	at net.minecraft.server.v1_8_R3.PlayerConnection.a(PlayerConnection.java:1382) [fix.jar:git-PaperSpigot-"4c7641d"]
	at net.minecraft.server.v1_8_R3.PacketPlayInUseEntity.a(SourceFile:52) [fix.jar:git-PaperSpigot-"4c7641d"]
	at net.minecraft.server.v1_8_R3.PacketPlayInUseEntity.a(SourceFile:11) [fix.jar:git-PaperSpigot-"4c7641d"]
	at net.minecraft.server.v1_8_R3.PlayerConnectionUtils$1.run(SourceFile:13) [fix.jar:git-PaperSpigot-"4c7641d"]
	at java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source) [?:1.8.0_151]
	at java.util.concurrent.FutureTask.run(Unknown Source) [?:1.8.0_151]
	at net.minecraft.server.v1_8_R3.SystemUtils.a(SourceFile:44) [fix.jar:git-PaperSpigot-"4c7641d"]
	at net.minecraft.server.v1_8_R3.MinecraftServer.B(MinecraftServer.java:774) [fix.jar:git-PaperSpigot-"4c7641d"]
	at net.minecraft.server.v1_8_R3.DedicatedServer.B(DedicatedServer.java:378) [fix.jar:git-PaperSpigot-"4c7641d"]
	at net.minecraft.server.v1_8_R3.MinecraftServer.A(MinecraftServer.java:713) [fix.jar:git-PaperSpigot-"4c7641d"]
	at net.minecraft.server.v1_8_R3.MinecraftServer.run(MinecraftServer.java:616) [fix.jar:git-PaperSpigot-"4c7641d"]
	at java.lang.Thread.run(Unknown Source) [?:1.8.0_151]
Caused by: java.lang.NullPointerException
	at net.dajman.duels.listeners.EntityDamageListener.onDamageByEntity(EntityDamageListener.java:69) ~[?:?]
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.8.0_151]
	at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) ~[?:1.8.0_151]
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) ~[?:1.8.0_151]
	at java.lang.reflect.Method.invoke(Unknown Source) ~[?:1.8.0_151]
	at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:300) ~[fix.jar:git-PaperSpigot-"4c7641d"]
	... 27 more