View file app/bootstrap.php

<?php

define('STARTTIME', microtime(1));
define('BASEDIR', dirname(__DIR__));
define('APP', BASEDIR.'/app');
define('HOME', BASEDIR);
define('STORAGE', APP.'/storage');
define('SITETIME', time());
define('PCLZIP_TEMPORARY_DIR', STORAGE.'/temp/');
define('VERSION', '6.1');

require_once BASEDIR.'/vendor/autoload.php';

if (! env('APP_ENV')) {
    $dotenv = new Dotenv\Dotenv(BASEDIR);
    $dotenv->load();
}

if (env('APP_DEBUG')) {
    $whoops = new Whoops\Run();
    $whoops->pushHandler(new Whoops\Handler\PrettyPageHandler);
    $whoops->pushHandler(function() {
        $_SERVER = array_except($_SERVER, array_keys($_ENV));
        $_ENV = [];
    });
    $whoops->register();
}

DBM::run()->config(
    env('DB_HOST'),
    env('DB_DATABASE'),
    env('DB_USERNAME'),
    env('DB_PASSWORD'),
    env('DB_PORT')
);