It appears that there is an issue with the Get Project Users endpoint. It has been working fine for a long time, but now is returning a 500 Internal Server error with every request I have tried. https://forge.autodesk.com/en/docs/bim360/v1/reference/http/admin-v1-projects-projectId-users-GET/ I am not using any of the more fancy parameters, just "?limit=200". I realize this is still marked as a beta endpoint, but I'm wondering if Autodesk is aware of there being an issue.
this is a known issue recently that you will need to specify region in the header. e.g. if your BIM 360 account is EMEA, then set the header when call GET: Project Users. If US, then US.
curl --location --request GET
'https://developer.api.autodesk.com/bim360/admin/v1/projects/:projectid/users' \
--header 'Region: EMEA' \
--header 'Authorization: Bearer ....'
Please let us know if it can work at your side.