Swagger YAML POST request with JSON body is not making a call

Node.js project debug session running on port localhost:1337 and Swagger project edit running on 127.0.0.1:63208

POST request works fine without body content using below Swagger YAML

swagger: "2.0"
info:
  version: "1.0.0"
  title: some title
host: localhost:1337
basePath: /api
schemes:
  - http
consumes:
  - application/json
produces:
  - applicaiton/json
paths:
  /auth/register:
    get:
      description: some description
      parameters:
      - name: body
        in: body
        description: ID of pet to use
        required: true
        schema:
          $ref: '#/definitions/RegisterUser'
      responses: 
        '200':
           description: OK
        '304':
          description: Authentication failed
        default:
           description: error payload
    post:
      description: Register a new user
      responses: 
        '200':
           description: OK
        '304':
          description: Authentication failed
        default:
           description: error payload
definitions:
  RegisterUser:
    type: object
    properties:
      userName:
        type: string
      password:
        type: string
      email:
        type: string

But when i add body object as below

swagger: "2.0"
info:
  version: "1.0.0"
  title: some title
host: localhost:1337
basePath: /api
schemes:
  - http
consumes:
  - application/json
produces:
  - application/json
paths:
  /auth/register:
    get:
      description: some description
      responses: 
        '200':
           description: OK
        '304':
          description: Authentication failed
        default:
           description: error payload
    post:
      description: Register a new user
      parameters:
        - in: body
          name: RegisterUser
          description: The movie you want update with.
          required: false
          schema:
            $ref: '#/definitions/RegisterUser'
      responses: 
        '200':
           description: OK
        '304':
          description: Authentication failed
        default:
           description: error payload
definitions:
  RegisterUser:
    type: object
    properties:
      name:
        type: string
      password:
        type: string
      email:
        type: string

Swagger displays Response ERROR Server not found or an error occurred Headers undefined Body

Cross origin requests doesn't seem to be the issue as POST without body is working. All cross origin requests are allowed using

res.header('Access-Control-Allow-Origin', '*');
res.header('Access-Control-Allow-Methods', 'GET,PUT,POST,DELETE,PATCH,OPTIONS');
res.header('Access-Control-Allow-Headers', 'Host, Accept, Accept-Encoding, Accept-Language, Cache-Control, Connection, Content-Type, Origin, Referer, User-Agent, Content-Length');

via Arvind Singh