When you upgrade to the latest update release of HxGN SDx and initialize Server Extensibility, a warning message appears that states:
An invalid request URI was provided. The request URI must either be an absolute URI or BaseAdress must be set.
You must make sure that the AuthServerAuthority setting in the authorization server does not contain any uppercase letters. For example:
<add key="AuthServerAuthority" value="https://test.hexagon.com/testconfigsvc/sdxauthentication/oauth/" />