I'm trying to stand up an instance of Cryptpad on a VPS. I have followed 3 different articles to try to get my way through it. They all end in the same result, browser errors and I see the Cryptpad logo with "loading" and that's it.

Browser error is always some variation of this:

NOTE: Actual error I receive right now, blurring out my domain name

And I don't know enough of HTML and JS to figure this out beyond it's missing something it's looking for. I did get it to load once, where the icons for the various apps loaded, but clicking on any of them yielded similar errors.

The tutorials I tried (formatting and reloading the OS between attempts):

1. Official documentation
2. How To Forge
3. Make Tech Easy

Option 3 was the clearest tutorial by far, but I still ran into issues. I followed each step exactly and still can't seem to figure this out. Does anyone have a second set of eyes and point out what I'm clearly doing wrong? I don't think I missed any steps in my multitude of attempts, but clearly I am.

I know I can pay someone to host it or use a public instance, but I'd really like to know what I missed so I can learn from it.