c# – 使用VideoLibrary(libvideo)的Youtube音频uri异常

An invalid request URI was provided. The request URI must either be an absolute URI or BaseAddress must be set.

我不明白为什么会这样.我怎么解决这个问题？

YouTube yt = YouTube.Default;
string link = "https://www.youtube.com/watch?v=QNJL6nfu__Q";
foreach (var item in yt.GetAllVideos(link))
{
   if (item.AdaptiveKind == AdaptiveKind.Audio)
      Console.WriteLine(item.Uri);
}