share you why my 4k down loader can't parse playlist with this link

Dear colleagues,

kindly I need your quick support to solve the issue with my 4k downloader, it can't parse below link to download the playlist.

https://www.youtube.com/watch?v=vUj8kzcg7Z4&list=PLjZ50AZ7ql6_dc0pGgMtYad_NCuHo0s18


thanks.