$project lab error

I am getting aggregation failed error

im also getting an error that
Your $project stage doesn’t seem correct

I am also getting the same error. If I run aggregate it sees working. But it doesn’t seem to get validated
Here is the screen shot

The first clue is the message:

Your $project stage doesn’t seem correct.

The second clue is the lab text:

add a $project stage to only display the title and film rating (title and rated fields).

The third clue is that you have the _id field in the output.

Look at https://docs.mongodb.com/manual/reference/operator/aggregation/project/ to see the special case of _id.

1 Like

Ohh Yes.
I completely missed about _id field.

Thank you @steevej. You saved my day :slight_smile: