title: Rasa nlu server problem with the error 500 and parsing
body: <p>I started the nlu server by typing this command in cmd:</p>
  
  <pre><code>    rasa run --enable-api -m models/(name of my package).tar
  </code></pre>
  
  <p>and then in other cmd window typed:</p>
  
  <pre><code>    curl localhost:5005/model/parse -d ‘{“text”:“hello”}’
  </code></pre>
  
  <p>after that I got an error:</p>
  
  <pre><code>    {“version”:“1.2.3”,“status”:“failure”,“message”:“An unexpected error 
      occurred. Error: Failed when parsing body as 
      json”,“reason”:“ParsingError”,“details”:{},“help”:null,“code”:500}
  </code></pre>
  
  <p>What is the reason for it? what should I change to get the normal(200) output?</p>