Error Response body is empty after sharing the VBCS application

Summary:

We are calling an OIC integration from VBCS application, if there is any thrown in the OIC it needs to be captured in VBCS and display it to the user.

The OIC integration is tested in both OIC and Postman and it gives back the desired error response, please find below both the responses. I have tested the endpoint from within the VBCS application itself and I get the response back.

If I preview the application then the response is all good, I can see the error response and I can get the fault details and show the custom error message passed from OIC