Spawn <mob type> issue

[Generic10]

Description

When i try to spawn multiple mobs at the same time i get spammed with this error at my console and sometimes the server crashes

on damage issue:
when i use the event on damage it spams errors and stop the server

Steps to Reproduce

command skele2:
	trigger:
		spawn a skeleton at player
		set display name of last spawned skeleton to "&6[T2] Skeleton"
		set max health of last spawned skeleton to 24
		equip last spawned skeleton with leather helmet
		equip last spawned skeleton with iron chestplate
		equip last spawned skeleton with iron boots
		enchant tool of last spawned skeleton with power 2
		enchant tool of last spawned skeleton with flame 1

on damage:
    victim is a zombie
    send "lol" 

Expected Behavior

It should fill the console with errors and lag a but and sometimes the server restarts / crashes

Errors / Screenshots

None in game only in console

https://pastebin.com/ZtSckTCH

for the second one: https://pastebin.com/V62S68aS

Server Information

• Server version/platform: 1.12.2 / Paper Spigot -1618
• Skript version: 2.5-beta-2

[ShaneBeee]

I just tested using Skript 2.5-beta4 and paper git-Paper-1618 (MC: 1.12.2),
no console errors.

Outcome:

I can not replicate this issue. Can you please try replicate this on beta4

[Generic10]

I did and the mob spawning is working but the on damage is still not working it just fills my console with errors

[ShaneBeee]

I could not reproduce that either.

code:

on damage:
	if victim is a zombie:
		send "Zombie" to all players

no console errors
message sends, nothing wrong from what I can see.

[ShaneBeee]

Closing due to can not replicate this error.

My assumption is its a plugin conflict of some kind.