Hey Matthew,
Could you elaborate where you obtained your link to rapid developer learningpath from?
The link you provided (https://gettingstarted.mendixcloud.com/link/path/31) is no longer supported,
since the sub-domain gettingstarted and main domain mendixcloud in this url are decomissioned.
instead the main domain is:
academy.mendix.com
As Eric mentioned above, the correct link is