public function updateComposerVendors()
    {
        chdir(DIR_BASE);

        exec('COMPOSER_HOME="' . substr(DIR_BASE, 0, -1) . '" composer -v update 2>&1', $out);
        if ($out) {
            $this->result_message[] = $out;
        }

        // Clear all caches - may be required to show fresh data
        Cacher::getInstance()->clearAllCaches();

        return $this;
    }