The recommendation is not being generated , The task is not running

[rsunder10]

I setted the RECOMMENDS_TASK_CRONTAB = {'minute': '*/1'} Its not running every minute
Even I went inside the package and manually set the task for every thirty second then also the recommendation is not being generated the task itself is not being called

@periodic_task(name='recommends_precompute', run_every=timedelta(seconds=30), expires=RECOMMENDS_TASK_EXPIRES)
    def _recommends_precompute():
        recommends_precompute()