I cannot download this link: https://www.dailymotion.com/video/x57u6ag

I cannot download the following two links:
https://www.dailymotion.com/video/x57u6ag
https://www.dailymotion.com/video/x57u70v

I get: Error: Can't Download from the 4K Video Downloader but nothing that says why. Please help.

Jeff