string(286) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E4%B8%BA%E5%95%A5%E4%BB%8Eb%E7%AB%99%E5%AF%BC%E5%87%BA%E7%9A%84%E8%A7%86%E9%A2%91%E6%B2%A1%E6%9C%89%E5%A3%B0%E9%9F%B3 => Failed to connect to 101.89.159.206 port 38187: Connection refused"
为啥从b站导出的视频没有声音
