Why am I seeing the error, "Unable to load interview" on Customer Portal?
All product versions, Customer Portal (CP)
The reason you are seeing this error on an embedded interview in CP is because of cross-origin resource sharing (CORS).
You will need to add the URL of your Oracle B2C Service (CX) site to the Authorized Embedded Hosts in the Intelligent Advisor Hub.
See the "Configure security for embedded interviews" area of the Intelligent Advisor Documentation for further information.
Intelligent Advisor Documentation.