Facing error "Failed to load resource: the server responded with a status of 404 (Not Found)" in web browse console

Ok, just to make a distiction, which I know you know but I jsut want to state it to make sure we are in the same channel.

Clicking on the file and opening in a browser is a good test. You are running your html+js as most ppl commonly use it. You are using the browser to render the files. Just to confirm: The p5.min.js was accessed via url or targeting the file on your disk?

Now, your real intentions is to access your page using a local server. You are using express to spin the server and then you you try accessing the page via localhost. Two things:

  1. What command are you using to spin the server?
  2. Is it possible to try a different port number? Try either 12009 or 4900.

I can try setting the express tonight if changing the port doesn’t help. I do not have experience with express but it should work if you are following the same instructions provided by Dan.

Kf