Celery Beat Django

Question

I am trying to run beat celery function but I am getting an error of:

Error: Unable to parse extra configuration from command line. Reason: not enough values to unpack (expected 2, got 1)

This is my code:

@periodic_task(name="fun_123", run_every=crontab(minute="1"))
def fun_123(context):
    bill = Bill.objects.get(id=context["id"])
    if bill.date < make_aware(datetime.now()):
       bill.check = False
    bill.save()

This is my command that I am using

    command: celery -A  backend worker -l DEBUG -BE fun_123