Heroku: Only the "/" is working on my php app

Question

I use php fast-route to handle routing on my application on Heroku free web dyno. The application is not using any framework.

Only the / page works. The rest are not working. Though they work properly on my local server.

If I try to access the login page https://creationspace.herokuapp.com/login it return 404 error - page not Found.

Here is my Procfile

web: vendor/bin/heroku-php-apache2 public/

Route.php

<?php declare(strict_types = 1);
    return [
        ['GET', '/', ['App\Controllers\Homepage', 'show']],
        ['GET', '/login', ['App\Controllers\Account\Login', 'show']],
    ];

Please I need help.