How to resolve 500 Message:An error has occurred while Accessing API from Azure?

I am working with Azure Mobile Services API, my API on the local host running well. I have checked with the help of Swagger UI. but when I publish my API to azure then after that by accessing the API with Swagger I got this error.

500 : {"Message":"An error has occurred."} http://xxxxxxxxxxx.azurewebsites.net/swagger/docs/v1

Now if I type this route http://xxxxxxxxxxx.azurewebsites.net/tables/doctor?ZUMO-API-VERSION=2.0.0 to any table then I got the result, why not with swagger?

help me to get on the right path.