The instructions for the lab say to format the answer like so:
{ "_id": "First Last", "numFilms": 1, "average": 1.1 }
But it was only when I inserted spaces before the colons that my answer was marked correct:
{ "_id" : "First Last", "numFilms" : 1, "average" : 1.1 }
This seems like something that should be fixed in the instructions, or else the answer checker should be made a little more flexible. Thanks!