string(238) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E8%BF%99%E6%A0%B7%E6%B8%85%E7%90%86%E5%BE%AE%E4%BF%A1%E7%BC%93%E5%AD%98 => Failed to connect to 14.18.117.71 port 38164: Connection refused"
这样清理微信缓存
