Unknown addon missing from files, catched data, etc. Can’t delete it.

Summary
Missing Addon File.

Steps to reproduce:
X

Expected Results:
The addon wont be missing.

Observed Results:
The addon will be missing, and it can’t be found on files, catched data, etc.

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Description:
Hey mojang, I download this “15 ways to die” addon, and then it was missing from catched data, my files, I tried finding it but it seem to be missing.

When I downloaded the world that has the addon. I saw the “missing” file. And it said it’s Suspicious Addon. It was only located in the addons not in the active ones. I tried removing it but it wouldn’t work.
I found it on the addon it was active though.
📜 Minecraft/
📂games/
📂com.mojang/
📂MinecraftWorlds/
📂(The world’s file)/
📂resources_pack/
📂0 (I tried deleting it but it didn’t work)
or
🗒resourcespack.json

Thank you!
If you need the steps to redpouce just ask me.