title: child "path" fails because "path" is not allowed to be empty
body: <p>I am trying to post below json by kibana in elastic but getting the following error. Is my json format is correct or this type of request is not supported by kibana.</p>
  
  <pre><code>put 
  {"index":{"_index":"insights-201806051143","_type":"doc","_id":"63AADB8C-9F84-4B84-90FB-A0E98F2FF927"}}
  {"industry":"abc",
  "geographiestaxonomysearch":["Americas","North America","United States"]}
  </code></pre>
  
  <p>Below is the error that I am getting:</p>
  
  <pre><code>{
    "statusCode": 400,
    "error": "Bad Request",
    "message": "child \"path\" fails because [\"path\" is not allowed to be empty]",
    "validation": {
      "source": "query",
      "keys": [
        "path"
      ]
    }
  }
  </code></pre>