Ticket: Migration - Received: null

Hello everyone!
I successfully updated the movies collection, however I get an error when I run the test. Thanks for any help!
This is the error:

This is the code:

        (async () => {
      try {
        const host = process.env.MFLIX_DB_URI
        const client = await MongoClient.connect(host, { useNewUrlParser: true })
        const mflix = client.db(process.env.MFLIX_NS)
        const movies = mflix.collection("movies")

        // TODO: Create the proper predicate and projection
        // add a predicate that checks that the `lastupdated` field exists, and then
        // check that its type is a string
        // a projection is not required, but may help reduce the amount of data sent
        // over the wire!
        const predicate = { lastupdated: { $exists: true, $type: "string" } }
        const projection = { lastupdated: true }
        const cursor = await movies.find(predicate, projection).toArray()
        const moviesToMigrate = cursor.map(({ _id, lastupdated }) => ({
          updateOne: {
            filter: { _id: ObjectId(_id) },
            update: {
              $set: { lastupdated: Date.parse(lastupdated) },
            },
          },
        }))
        console.log(
          "\x1b[32m",
          `Found ${moviesToMigrate.length} documents to update`,
        )
        // TODO: Complete the BulkWrite statement below
        const { modifiedCount } = await movies.bulkWrite(moviesToMigrate)

        console.log("\x1b[32m", `${modifiedCount} documents updated`)
        client.close()
        process.exit(0)
      } catch (e) {
        if (
          e instanceof MongoError &&
          e.message.slice(0, "Invalid Operation".length) === "Invalid Operation"
        ) {
          console.log("\x1b[32m", "No documents to update")
        } else {
          console.error("\x1b[31m", `Error during migration, ${e}`)
        }
        process.exit(1)
      }
    })()

Hi @Wicleice_Fabio,
Can you please update this:

to:

 $set: { lastupdated: new Date(lastupdated) } 

In case you have any doubts, please feel free to reach out to us.

Thanks and Regards.
Sourabh Bagrecha,
Curriculum Services Engineer

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