This bombed before; it is working as expected now, thanks.
$ streamlink https://www.yupptv.com/channels/asianet-news/liveXXX
[cli][info] Found matching plugin yupptv for URL https://www.yupptv.com/channels/asianet-news/liveXXX
error: Unable to open URL: https://www.yupptv.com/channels/asianet-news/liveXXX (404 Client Error: Not Found for url: https://www.yupptv.com/channels/asianet-news/liveXXX)
$ streamlink -j https://www.yupptv.com/channels/asianet-news/liveXXX
{
  "error": "Unable to open URL: https://www.yupptv.com/channels/asianet-news/liveXXX (404 Client Error: Not Found for url: https://www.yupptv.com/channels/asianet-news/liveXXX)"
}