willy.club/app/App/Controller/DefaultController.php

<?php

namespace App\Controller;

abstract class DefaultController
{
    static function index()
    {
        view('pages/home');
    }

    static function echo($text = 'You sent nothing...')
    {
        json_response($text);
    }

    static function error()
    {
        1 / 0;
    }
}