从10.30日下午开始，访问二维码qrcode部分服务器出现time out问题。

upstream timed out (110: Connection timed out) while connecting to upstream，麻烦请查看下问题

upstream: “https://223.167.86.22:443/cgi-bin/showqrcode?ticket=gQGc7zwAAAAAAAAAAS5odHRwOi8vd2VpeGluLnFxLmNvbS9xLzAyVEFLc0ZYR1JlcWsxTlU5eWh0MXAAAgR4fLpdAwQAjScA”