Lab 6.3 - Error when trying to create cron job

Hi all,

I'm working on "Exercise 6.3: Working with Cron Jobs". I have created the YAML file cron-job.yaml as shown below:

apiVersion: batch/v1beta1
kind: CronJob
metadata:
  name: date
spec:
  schedule: "*/1 * * * *"
  jobTemplate:
    spec:
      template:
        spec:
          containers:
          - name: dateperminute
            image: busybox
            args:
            - /bin/sh
            - -c
            - date; sleep 30
         restartPolicy: OnFailure

When I attempt step 2. Create the cron job. I receive the error below.

~$ kubectl create -f cron-job.yaml
error: error converting YAML to JSON: yaml: line 17: did not find expected key

Please advise what key I should be providing.