After trying all those methods in https://forum.videohelp.com/threads/377290-4K-Video-Downloader-Issues, it stills cannot work.....
What's the matter?
+ Reply to Thread
Results 1 to 2 of 2
That happens with most software/plugins for YouTube from time to time. As noted in the error, the software can read (parse) the url. YouTube likely changed something on their side and the software hasn't been updated yet.Google is your Friend