text: Title: JSONDecodeError: Expecting value: line 1 column 1 (char 0)
  Body: Hello Abhishek 
  I try today with the latest changes but still is not working for me. Now I get "Internal Server Error" using FastAPI Swagger UI (see picture)
  
  ![image](https://user-images.githubusercontent.com/27162948/91198589-05676d00-e6fd-11ea-9b41-bbc7efa58d46.png)
  
  If I request a GET info, I get the name and the description of the model (see next picture)
  
  ![image](https://user-images.githubusercontent.com/27162948/91198363-c0dbd180-e6fc-11ea-9880-713762e3198f.png)
  
  The front end present the same Json decoder error as yesterday.
  
  ![image](https://user-images.githubusercontent.com/27162948/91198901-760e8980-e6fd-11ea-812f-35421636bc16.png)
  
  I tried in windows and linux again.
  