[01:33:44] [Server thread/WARN]: Unknown target reason, please report on the issue tracker
java.lang.Exception
	at net.minecraft.server.v1_8_R1.EntityInsentient.setGoalTarget(EntityInsentient.java:102) [custom.jar:git-Spigot-330d66b-fe41b01]
	at net.minecraft.server.v1_8_R1.EntityInsentient.setGoalTarget(EntityInsentient.java:92) [custom.jar:git-Spigot-330d66b-fe41b01]
	at com.gmail.scyntrus.fmob.EntityListener.onEntityDamageByEntity(EntityListener.java:200) [FactionMobs.jar:?]
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.7.0_67]
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57) ~[?:1.7.0_67]
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.7.0_67]
	at java.lang.reflect.Method.invoke(Method.java:606) ~[?:1.7.0_67]
	at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:301) [custom.jar:git-Spigot-330d66b-fe41b01]
	at org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.java:62) [custom.jar:git-Spigot-330d66b-fe41b01]
	at org.bukkit.plugin.SimplePluginManager.fireEvent(SimplePluginManager.java:502) [custom.jar:git-Spigot-330d66b-fe41b01]
	at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.java:487) [custom.jar:git-Spigot-330d66b-fe41b01]
	at org.bukkit.craftbukkit.v1_8_R1.event.CraftEventFactory.callEvent(CraftEventFactory.java:85) [custom.jar:git-Spigot-330d66b-fe41b01]
	at org.bukkit.craftbukkit.v1_8_R1.event.CraftEventFactory.callEntityDamageEvent(CraftEventFactory.java:538) [custom.jar:git-Spigot-330d66b-fe41b01]
	at org.bukkit.craftbukkit.v1_8_R1.event.CraftEventFactory.handleEntityDamageEvent(CraftEventFactory.java:451) [custom.jar:git-Spigot-330d66b-fe41b01]
	at org.bukkit.craftbukkit.v1_8_R1.event.CraftEventFactory.handleLivingEntityDamageEvent(CraftEventFactory.java:570) [custom.jar:git-Spigot-330d66b-fe41b01]
	at net.minecraft.server.v1_8_R1.EntityLiving.d(EntityLiving.java:1064) [custom.jar:git-Spigot-330d66b-fe41b01]
	at net.minecraft.server.v1_8_R1.EntityLiving.damageEntity(EntityLiving.java:705) [custom.jar:git-Spigot-330d66b-fe41b01]
	at net.minecraft.server.v1_8_R1.EntityMonster.damageEntity(EntityMonster.java:44) [custom.jar:git-Spigot-330d66b-fe41b01]
	at net.minecraft.server.v1_8_R1.EntityZombie.damageEntity(EntityZombie.java:168) [custom.jar:git-Spigot-330d66b-fe41b01]
	at net.minecraft.server.v1_8_R1.EntityMonster.r(EntityMonster.java:74) [custom.jar:git-Spigot-330d66b-fe41b01]
	at net.minecraft.server.v1_8_R1.EntitySkeleton.r(EntitySkeleton.java:58) [custom.jar:git-Spigot-330d66b-fe41b01]
	at net.minecraft.server.v1_8_R1.PathfinderGoalMeleeAttack.e(SourceFile:122) [custom.jar:git-Spigot-330d66b-fe41b01]
	at net.minecraft.server.v1_8_R1.PathfinderGoalSelector.a(PathfinderGoalSelector.java:93) [custom.jar:git-Spigot-330d66b-fe41b01]
	at net.minecraft.server.v1_8_R1.EntityInsentient.doTick(EntityInsentient.java:467) [custom.jar:git-Spigot-330d66b-fe41b01]
	at net.minecraft.server.v1_8_R1.EntityLiving.m(EntityLiving.java:1584) [custom.jar:git-Spigot-330d66b-fe41b01]
	at net.minecraft.server.v1_8_R1.EntityInsentient.m(EntityInsentient.java:332) [custom.jar:git-Spigot-330d66b-fe41b01]
	at net.minecraft.server.v1_8_R1.EntityMonster.m(EntityMonster.java:22) [custom.jar:git-Spigot-330d66b-fe41b01]
	at net.minecraft.server.v1_8_R1.EntitySkeleton.m(EntitySkeleton.java:111) [custom.jar:git-Spigot-330d66b-fe41b01]
	at com.gmail.scyntrus.fmob.mobs.Swordsman.m(Swordsman.java:118) [FactionMobs.jar:?]
	at net.minecraft.server.v1_8_R1.EntityLiving.s_(EntityLiving.java:1445) [custom.jar:git-Spigot-330d66b-fe41b01]
	at net.minecraft.server.v1_8_R1.EntityInsentient.s_(EntityInsentient.java:193) [custom.jar:git-Spigot-330d66b-fe41b01]
	at net.minecraft.server.v1_8_R1.EntityMonster.s_(EntityMonster.java:26) [custom.jar:git-Spigot-330d66b-fe41b01]
	at com.gmail.scyntrus.fmob.mobs.Swordsman.s_(Swordsman.java:526) [FactionMobs.jar:?]
	at net.minecraft.server.v1_8_R1.World.entityJoinedWorld(World.java:1590) [custom.jar:git-Spigot-330d66b-fe41b01]
	at net.minecraft.server.v1_8_R1.World.g(World.java:1565) [custom.jar:git-Spigot-330d66b-fe41b01]
	at net.minecraft.server.v1_8_R1.World.tickEntities(World.java:1412) [custom.jar:git-Spigot-330d66b-fe41b01]
	at net.minecraft.server.v1_8_R1.WorldServer.tickEntities(WorldServer.java:577) [custom.jar:git-Spigot-330d66b-fe41b01]
	at net.minecraft.server.v1_8_R1.MinecraftServer.z(MinecraftServer.java:757) [custom.jar:git-Spigot-330d66b-fe41b01]
	at net.minecraft.server.v1_8_R1.DedicatedServer.z(DedicatedServer.java:316) [custom.jar:git-Spigot-330d66b-fe41b01]
	at net.minecraft.server.v1_8_R1.MinecraftServer.y(MinecraftServer.java:623) [custom.jar:git-Spigot-330d66b-fe41b01]
	at net.minecraft.server.v1_8_R1.MinecraftServer.run(MinecraftServer.java:526) [custom.jar:git-Spigot-330d66b-fe41b01]
	at java.lang.Thread.run(Thread.java:745) [?:1.7.0_67]