string(303) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E6%8A%96%E9%9F%B3%E7%BC%93%E5%AD%98%E6%B8%85%E7%90%86%E5%90%8E%E8%BF%98%E6%98%AF%E5%8D%A0%E5%BE%88%E5%A4%A7%E7%9A%84%E7%A9%BA%E9%97%B4 => Failed to connect to 101.89.159.206 port 38187: Connection refused"
抖音缓存清理后还是占很大的空间
