The requested domain name is not configured for any web site:
https://connect.mandela.ac.za:443/Groups/Logistics_Society/Library-Library_group_b153e5da-a16e-4848-b392-9e5ddd40605a.aspx
If you're an administrator of this site, you need to go to
Site Manager -> Sites
and use the following domain name either in the Site properties or add a new domain alias:
connect.mandela.ac.za:443