string(274) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E6%B3%A8%E5%AE%89%E5%B8%88%E5%A6%82%E4%BD%95%E5%8F%96%E6%B6%88%E8%AF%81%E4%B9%A6%E5%8A%A0%E6%B3%A8%E5%86%8C => Failed to connect to 14.18.117.71 port 38220: Connection refused"
注安师如何取消证书加注册
