string(256) "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%E7%90%86%E5%86%85%E5%AD%98%E8%BF%98%E6%98%AF%E4%B8%8D%E8%B6%B3 => Failed to connect to 14.18.117.71 port 38069: Connection refused"
微信清理内存还是不足
