I have a hosted feature service in my portal that I'm trying to add as an Item to my AGOL org. However, when I try to embed my portal credentials into the item in AGOL if get the message: Unable to access the authentication service.
When I open the developer console, I get the message: blocked by CORS policy: The 'Access-Control-Allow-Origin' header contains multiple values.
This is the first time I've had this issue in recent memory. I have other services added to AGOL from my portal with embedded credentials that have no issues.
Thanks for any help.
Michael
