string(258) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E6%80%8E%E4%B9%88%E5%8F%AF%E4%BB%A5%E6%B8%85%E7%90%86%E5%BE%AE%E4%BF%A1%E5%86%85%E5%AD%98 => Failed to connect to 101.89.143.195 port 38175: Connection refused"
怎么可以清理微信内存
