string(294) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E5%BE%AE%E4%BF%A1%E6%B8%85%E6%A5%9A%E7%BC%93%E5%AD%98%E4%BC%9A%E6%B8%85%E6%8E%89%E8%81%8A%E5%A4%A9%E6%96%87%E4%BB%B6%E5%90%97 => Failed to connect to 101.89.117.144 port 38056: Connection refused"
微信清楚缓存会清掉聊天文件吗
