title: Getting this error in MS Teams graph API: "Value cannot be null.\r\nParameter name: value"
body: <p>When I create a group in MS Teams using REST API in postman.</p>
  
  <p>URL: <a href="https://graph.microsoft.com/beta/groups" rel="nofollow noreferrer">https://graph.microsoft.com/beta/groups</a></p>
  
  <p>Request Body:</p>
  
  <pre><code>{
    "description": "Self help community for golf",
    "displayName": "Golf Assist",
    "groupTypes": [
      "Unified"
    ],
    "mailEnabled": true,
    "mailNickname": "golfassist",
    "securityEnabled": false
  }
  </code></pre>
  
  <p>I got an error. Error is given below.</p>
  
  <pre><code>{
      "error": {
          "code": "InternalServerError",
          "message": "Value cannot be null.\r\nParameter name: value",
          "innerError": {
              "request-id": "4a57c3e2-47a4-46bd-a5bb-a00a612fd613",
              "date": "2019-04-02T16:31:30"
          }
      }
  }
  </code></pre>
  
  <p>How can I correct this issue?</p>