Swiper is Undefined

[ColinSexton-1207]

I've spent the better part of three days looking for an answer to this issue, and I haven't found a single one that works...

This is the error I'm getting:

The entire thing doesn't work. You won't be able to move to the next slide in any capacity, nor the previous.

Link to the project:
https://github.com/ColinSexton-1207/EComm-Playground

Home page is where the issue is.