I am having the hardest time deploying a simple react application to github pages. You move one file to a wrong directory and it throws the entire process off.
What do I do once I run npm run build?
That puts all my files into a build folder, but the browser still keeps giving me 404 errors, thinking that anything typed after the initial url route's "/" is looking for an actual file from a server. I just want to use whatever comes after the / as routes that I set up in my React Router... :(
Create-React-App has a detailed documentation on how to deploy your build to Github Pages and Heroku. You can read it here. Your specific issue is covered in "Notes on client-side routing" section.