I've been trying to connect to our internal SharePoint 2016 using postman. I've generated an ID and Secret, but I am unable to generate an access token. When using the get http://share-internal.SITENAME.com/teams/TEAM/_vti_bin/client.svc/, instead of getting an authentication error like in the other examples online, I get some difficult to understand xml and the 200 OK. Is this an issue specific to internal sharepoint?