string(247) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E6%B3%A8%E4%BC%9A%E8%AF%BE%E7%A8%8B%E6%9B%B4%E6%96%B0%E6%97%B6%E9%97%B4%E8%A1%A8 => Failed to connect to 14.18.117.71 port 38133: Connection refused"
注会课程更新时间表
