protected function storeSettings()
    {
        $dumper = new Dumper();
        $yaml   = $dumper->dump($this->settings, 4);
        file_put_contents(PHPCI_CONFIG_FILE, $yaml);

        if (error_get_last()) {
            $error_get_last = error_get_last();
            return $error_get_last['message'];
        }
    }