Difficulties Uploading a World

[AeServer]

I'm having some difficulty uploading a world onto Minehut. I have all the world files (the overworld, the nether, and the end) in zip files. I watched the video on Youtube on how to upload a world, but I immediately encountered an issue. File.io does not convert files greater than 100mB into links for free, and, call me stingy if you want, I don't feel like paying 1 dollar just to upload a world. 

I heard Mediafire also works, so I tried that too. Long story short, it didn't work.
Here's the world link: https://www.mediafire.com/file/5r8kgwt9b30lk90/world.zip/file

I tried two different zip files. One where it was
Zip folder > world > data folders
and
Zip folder > data folders
Basically the only difference was that there's no "middle man 'world' folder" because I read somewhere that that would cause some problem. Regardless of how the zip file is formatted, it didn't work.

I would do the command /ul world newworld (link) and it will respond with:
Downloading files (size: 0MB)...
Upload failed! Invalid files...

Dropbox didn't work either, it would give the same message.

I also tried uploading the world from the world tab in the dashboard. It will respond with:
An Unknown Error Occured

Any ideas on what should I do? I'm kinda at a lost here. Thanks in advance.

MC version: 1.17
Software used: Paper