Same link works for me.
Aug 22 2015 04:57 AM
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.