string(238) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E6%B8%85%E9%99%A4%E5%BE%AE%E4%BF%A1%E5%A4%B4%E5%83%8F%E7%BC%93%E5%AD%98 => Failed to connect to 14.18.117.71 port 38069: Connection refused"
清除微信头像缓存
