Same link works for me.
Try this:
1. Open gmail.com
2. Sign in with your google account. Don't close this tab
3. Open new tab. Copy the link and paste it.
4. You will find an option at right corner - "Add to google drive". Close this tab
5. Now open your Google Drive and access the content. Permission will granted automatically to it.
Still show the error. Then please provide the snap of that error.

Parvathi the contents of this folder has already been shared with you via github. I have sent a mail on this too.

Best Regards
Deb.