I was working on the admin interface of my Django project, trying to get the right fields to show up in the right form, then on one of the reloads the CSS stopped loading, the Chrome inspector tells me the CSS files return a 404 error. I don't know what happened and can't figure it out.

It's not a static files issue - the project doesn't use static files at all, and the staticfiles app has been commented out in settings.py (this is not recent, the CSS has been working for weeks without it). Debug is set to True (this also is not recent), however the project isn't served by runserver anyway.

I've tried destroying and recreating the virtual machine the project is running on, which means literally everything except the project's own files is 100% fresh. Problem still persists.

The question is, what can I do to get CSS working again?