Mongo db insert many docs

for this challenge: https://learn.freecodecamp.org/apis-and-microservices/mongodb-and-mongoose/create-many-records-with-model-create/
I got every thing done using this code and i can find the docs in my database but it didn’t pass>
whats wrong???

const arr = [
    {name: 'John', age: 23, favoriteFoods:['Burger', 'Pizza']}, 
    {name: 'Howard', age: 33, favoriteFoods:['Pasta', 'Sandwich']}];

let createManyPeople = Person.insertMany(arr)
    .then(function (docs) {
        console.log(docs);
    })
    .catch(function (err) {
        console.log(err);
    });