`@sourceloop/video-conferencing-service`: [POST] `/session` doesn't return json.

[shubhamp-sf]

Describe the bug The API to get meeting link returns a string which leads to the following error:

{
    "error": {
        "statusCode": 415,
        "name": "UnsupportedMediaTypeError",
        "message": "Content-type text/plain;charset=UTF-8 does not match [application/json].",
        "code": "UNSUPPORTED_MEDIA_TYPE"
    }
}

To Reproduce Steps to reproduce the behaviour:

1. Install and setup @sourceloop/video-conferencing-service.
2. Hit the /session POST api.
3. See the error returned.

Expected behaviour It should return the response in JSON format containing the meeting link.