View file system/src/Modules/Modules.php

<?php

/**
 * This file is part of JohnCMS Content Management System.
 *
 * @copyright JohnCMS Community
 * @license   https://opensource.org/licenses/GPL-3.0 GPL-3.0
 * @link      https://johncms.com JohnCMS Project
 */

namespace Johncms\Modules;

use Aura\Autoload\Loader;

class Modules
{
    /** @var array */
    protected $config;

    public function __construct()
    {
        $this->config = di('config')['modules'] ?? [];
    }

    public function getInstalled(): array
    {
        return array_merge($this->config['installed_modules'], $this->config['system_modules']);
    }

    public function registerAutoloader(): void
    {
        $installed_modules = $this->getInstalled();
        $loader = (new Loader());
        $loader->register();
        foreach ($installed_modules as $module) {
            $loader->addPrefix(ucfirst($module), ROOT_PATH . 'modules/' . $module . '/');
        }
    }
}