Thrown error when check if an event-entity is equal to a type of entity

[Anarchick]

Description

If we miss to write the "a" from "a spider" , an error is thrown. It's not only for spider but all types of entities.
No skript parsing error.

Steps to Reproduce

on spawn:
    type of event-entity is a zombie or a skeleton or a creeper or a zombie villager or a drowned or a husk or spider
    # Rest of the code

This thrown a console error :
type of event-entity is a zombie or a skeleton or a creeper or a zombie villager or a drowned or a husk or spider
This works :
type of event-entity is a zombie or a skeleton or a creeper or a zombie villager or a drowned or a husk or a spider

Expected Behavior

With previous Skript version, we do not need to write the "a" or "an"

Errors / Screenshots

https://hastebin.com/vojexixame.md

Server Information

• Server version/platform: PAPER-249 (1.16.3)
• Skript version: 2.5.1

[Romitou]

Oops, I made a mistake in my last comment which I deleted.
In any case, I can reproduce this issue with Skript 2.5.1 and git-Paper-182 (MC: 1.16.2) : https://gist.github.com/Romitou/6895be87f61831dc49ddf28d6d1b7741.

[ShaneBeee]

This isn't actually a bug, but rather user error

spider refers to an actual entity, ie: the spider.
a spider refers to an entity type.

On that note, it shouldn't throw the error it is throwing, it should throw a Skript error stating the syntax is incorrectly being used.

I'm marking this as a low priority because the error only comes up when using incorrect code, therefor is not truly harmful.

[TheLimeGlass]

Are you using an addon? Does your addon list include Umbaska? There is a "bug" that requires you to put the letter a before an entity type. Seen this happen lots through the years, it has always been because of Umbaska, not so much anymore because Umbaska isn't used anymore. It's really weird, can you attempt the same issue with no add-ons please and thank you.

Also hastebin link has expired.