Tbh men like me are a step away from becoming cats and I would love to just be a cat. Every step we do that progresses men becoming cats is fine for me.

404 is a web server response suggesting that a web server is up. It’s what’s giving 404.

The web server can’t find your page or document or resource. So one of your web servers (on either the reverse proxy or the actual server) is pointing to the wrong spot on what to serve.

You haven’t tried launching a wrong server on the same port right? Or misconfigured your nginx translation?

Isolate the issue. Ignore nginx and start testing just the web server on the destination and see if the server is giving 404 and then if it is giving the right document then it’s nginx configuration. If it’s not giving you the document nginx can’t serve.

But either way start isolating the problem into the smallest area. And focus on the configurations and files that are related to it.

Stretched limousines exist by this very method. I’m Australian but the concept wasn’t started here. https://www.belle.net.au/building-a-stretch-limousine/

Edit:

We do know of limousines that have been shipped back to the USA for failing to meet Australian standards.

I’d say it’s easier in many American states.