Error while Create a Mashup with APIs (Composite APIs)

[#1]

Hello,

While trying the API Mesh Up and when accessing:

http://maps.googleapis.com/maps/api/geocode/json

I am getting the following error:

{
   "error_message" : "Invalid request. Missing the 'address', 'components', 'latlng' or 'place_id' parameter.",
   "results" : [],
   "status" : "INVALID_REQUEST"
}

Please help and suggest...