Hello, I am having trouble with a skript of mine. When I give a skeleton an iron sword it crashes the server when the skeleton tries to attack someone. Code I am using:

Code (Skript):

1. command /test:
2.     trigger:
3.         spawn a skeleton at player's location
4.         set the weapon of the last spawned skeleton to iron sword

Is there a way to fix this?

EDIT:
I also figured out that this bug stops when the server restarts. (The skeleton that was spawned in before it crashed is working fine and kills people with the sword. but the new ones i spawn in crash the server. Also a funny thing I found was if I spawn it in normally without giving it a bow the skeleton will kill people like it has a sword (it wont shoot arrows it will hit people and it doesnt crash) and i dont know why it does that. Another weird thing is if I add "delete last spawned skeleton's held item" it only removes it once I leave the chunk the skeleton is in and go back in. Also when I do this it doesn't crash the server when it damages people.

 

I don't understand what you are saying... BTW that code still has the same outcome.

 

Spoiler: Crash Report

---- Minecraft Crash Report ----
// Oh - I know what I did wrong!

Time: 30/11/17 10:08
Description: Ticking entity

java.util.NoSuchElementException
at org.bukkit.craftbukkit.v1_8_R3.util.UnsafeList$Itr.next(UnsafeList.java:248)
at net.minecraft.server.v1_8_R3.PathfinderGoalSelector.a(PathfinderGoalSelector.java:90)
at net.minecraft.server.v1_8_R3.EntityInsentient.doTick(EntityInsentient.java:473)
at net.minecraft.server.v1_8_R3.EntityLiving.m(EntityLiving.java:1626)
at net.minecraft.server.v1_8_R3.EntityInsentient.m(EntityInsentient.java:338)
at net.minecraft.server.v1_8_R3.EntityMonster.m(EntityMonster.java:20)
at net.minecraft.server.v1_8_R3.EntitySkeleton.m(EntitySkeleton.java:110)
at net.minecraft.server.v1_8_R3.EntityLiving.t_(EntityLiving.java:1487)
at net.minecraft.server.v1_8_R3.EntityInsentient.t_(EntityInsentient.java:193)
at net.minecraft.server.v1_8_R3.EntityMonster.t_(EntityMonster.java:24)
at net.minecraft.server.v1_8_R3.World.entityJoinedWorld(World.java:1607)
at net.minecraft.server.v1_8_R3.World.g(World.java:1582)
at net.minecraft.server.v1_8_R3.World.tickEntities(World.java:1425)
at net.minecraft.server.v1_8_R3.WorldServer.tickEntities(WorldServer.java:597)
at net.minecraft.server.v1_8_R3.MinecraftServer.B(MinecraftServer.java:786)
at net.minecraft.server.v1_8_R3.DedicatedServer.B(DedicatedServer.java:374)
at net.minecraft.server.v1_8_R3.MinecraftServer.A(MinecraftServer.java:654)
at net.minecraft.server.v1_8_R3.MinecraftServer.run(MinecraftServer.java:557)
at java.lang.Thread.run(Thread.java:748)


A detailed walkthrough of the error, its code path and all known details is as follows:
---------------------------------------------------------------------------------------

-- Head --
Stacktrace:
at org.bukkit.craftbukkit.v1_8_R3.util.UnsafeList$Itr.next(UnsafeList.java:248)
at net.minecraft.server.v1_8_R3.PathfinderGoalSelector.a(PathfinderGoalSelector.java:90)
at net.minecraft.server.v1_8_R3.EntityInsentient.doTick(EntityInsentient.java:473)
at net.minecraft.server.v1_8_R3.EntityLiving.m(EntityLiving.java:1626)
at net.minecraft.server.v1_8_R3.EntityInsentient.m(EntityInsentient.java:338)
at net.minecraft.server.v1_8_R3.EntityMonster.m(EntityMonster.java:20)
at net.minecraft.server.v1_8_R3.EntitySkeleton.m(EntitySkeleton.java:110)
at net.minecraft.server.v1_8_R3.EntityLiving.t_(EntityLiving.java:1487)
at net.minecraft.server.v1_8_R3.EntityInsentient.t_(EntityInsentient.java:193)
at net.minecraft.server.v1_8_R3.EntityMonster.t_(EntityMonster.java:24)
at net.minecraft.server.v1_8_R3.World.entityJoinedWorld(World.java:1607)
at net.minecraft.server.v1_8_R3.World.g(World.java:1582)

-- Entity being ticked --
Details:
Entity Type: Skeleton (net.minecraft.server.v1_8_R3.EntitySkeleton)
Entity ID: 98
Entity Name: Skeleton
Entity's Exact location: -31.82, 30.00, 192.05
Entity's Block location: -32.00,30.00,192.00 - World: (-32,30,192), Chunk: (at 0,1,0 in -2,12; contains blocks -32,0,192 to -17,255,207), Region: (-1,0; contains chunks -32,0 to -1,31, blocks -512,0,0 to -1,255,511)
Entity's Momentum: 0.00, -0.08, 0.00
Entity's Rider: ~~ERROR~~ NullPointerException: null
Entity's Vehicle: ~~ERROR~~ NullPointerException: null
Stacktrace:
at net.minecraft.server.v1_8_R3.World.tickEntities(World.java:1425)
at net.minecraft.server.v1_8_R3.WorldServer.tickEntities(WorldServer.java:597)

-- Affected level --
Details:
Level name: world
All players: 1 total; [EntityPlayer['XPussySlayer69X'/97, l='world', x=-31.59, y=30.00, z=190.73](XPussySlayer69X at -31.590046782735484,30.0,190.72823857525643)]
Chunk stats: ServerChunkCache: 257 Drop: 0
Level seed: 0
Level generator: ID 01 - flat, ver 0. Features enabled: false
Level generator options: ;0
Level spawn location: -10.00,85.00,204.00 - World: (-10,85,204), Chunk: (at 6,5,12 in -1,12; contains blocks -16,0,192 to -1,255,207), Region: (-1,0; contains chunks -32,0 to -1,31, blocks -512,0,0 to -1,255,511)
Level time: 88165165 game time, 11010000 day time
Level dimension: 0
Level storage version: 0x04ABD - Anvil
Level weather: Rain time: 87630 (now: false), thunder time: 112140 (now: false)
Level game mode: Game mode: survival (ID 0). Hardcore: false. Cheats: true
Stacktrace:
at net.minecraft.server.v1_8_R3.MinecraftServer.B(MinecraftServer.java:786)
at net.minecraft.server.v1_8_R3.DedicatedServer.B(DedicatedServer.java:374)
at net.minecraft.server.v1_8_R3.MinecraftServer.A(MinecraftServer.java:654)
at net.minecraft.server.v1_8_R3.MinecraftServer.run(MinecraftServer.java:557)
at java.lang.Thread.run(Thread.java:748)