private function initializeSymfonyCache()
    {
        $cache = Configuration::projectDir() . $this->config['var_path'] . DIRECTORY_SEPARATOR . 'bootstrap.php.cache';
        if (PHP_VERSION_ID < 70000 && !file_exists($cache)) {
            throw new ModuleRequireException(
                __CLASS__,
                "Symfony bootstrap file not found in $cache\n \n" .
                "Please specify path to bootstrap file using `var_path` config option\n \n" .
                "If you are trying to load bootstrap from a Bundle provide path like:\n \n" .
                "modules:\n    enabled:\n" .
                "    - Symfony:\n" .
                "        var_path: '../../app'\n" .
                "        app_path: '../../app'"
            );
        }
        if (file_exists($cache)) {
            require_once $cache;
        }
    }