https://blog.wongcw.com/2021/01/12/%e8%98%8b%e6%9e%9c%e7%82%ba%e8%80%81%e6%ac%be%e8%a8%ad%e5%82%99%e7%99%bc%e5%b8%83ios-12-5-1-%e4%bf%ae%e6%ad%a3%e4%ba%86covid-19%e6%9b%9d%e5%85%89%e9%80%9a%e7%9f%a5%e7%9a%84bug/