Hi, the Lab 4.2 Aggregation Performance is not well redacted. The lab contains the following sentences:
"In the text box below, submit the index that resolves the issue.
For example, if you ran db.restaurants.createIndex({ foobar: 1 }) to fix the error, then you’d enter { foobar: 1 } into the text box."
My first solution was the correct solution in these format and was marked as wrong: { correct_field: 1}
My second solution was try with db.restaurants.createIndex({ correct_field: 1 }) and the third try I used other type of index.
This is not fair.
What can I do?