public function onWorkerError(\Swoole\Server $server, int $worker_id, int $worker_pid, int $exit_code)
    {
        echo date('Y-m-d H:i:s') . " |\033[31m http worker process error[id={$worker_id} pid={$worker_pid}] ......\033[0m \n";

        // Add event Listener
        $this->add_event_listener('onWorkerError');
    }