PHP Sample App - Login Not Found


I have been trying to follow the GitHub - auth0-samples/auth0-php-web-app: Auth0 Integration Samples for PHP Web Applications, but the guide and the app don’t match.

I finally got to the stage of page loading, but when I clicked on login, I just got a 404 error that the page did not exist.

I am trying to run the app on a staging domain, so altered the URL to match - I feel like I might have missed something but I am slightly confused due to the guide providing different code to the sample app.

Anything I can check?