Hi viki3110 ,
Can you please share any screenshot of request and response, because the syntax you are using seems correct to me.
Probably something to do with the context you are running the test under. I may be able to help but you'll need to post your project.
Make a copy of your project.
Open the copy and delete anything not related to this problem.
Create a mock service for the interface you are having problems with.
Set the end point for the failing test case to the mock service.
Make sure you can reproduce the issue against the mock service.
Post the project here as an attachment.
