Rasa NLU Http Training issue

I’ve used 2 kind of format to train NLU model:

Using training data in json format:

language: "en"

pipeline: "spacy_sklearn"

# data contains the same json, as described in the training data section
data: {
  "rasa_nlu_data": {
    "common_examples": [
      {
        "text": "hey",
        "intent": "greet",
        "entities": []
      }
    ]
  }
}

Using training data in md format:

language: "en"

pipeline: "spacy_sklearn"

# data contains the same md, as described in the training data section
data: |
  ## intent:affirm
  - yes
  - yep

  ## intent:goodbye
  - bye
  - goodbye

use postman to call “localhost:5000/train?project=my_project” with training data, two model generated successfully, see the image

the issue is model_20180821_090703 was trained in JSON format, and response intent of " localhost:5000/parse?project=my_project&q=bye" always null.

{
        "intent": null,
        "entities": [],
        "intent_ranking": [],
        "text": "bye",
        "project": "my_project",
        "model": "model_20180821-090703"
    }

but model_20180821-090636 works well, anybody can give any help will be greatly appreciate, thanks

You only have one intent example here