old_contents: from datetime import timedelta
  
  from django.conf import settings
  from django.core.management import call_command
  
  from celery.task import periodic_task
  
  
  @periodic_task(run_every=timedelta(minutes=settings.TWEET_INTERVAL_MINUTES))
  def tweet_next_task():
      call_command('tweet_next', verbose=True, interactive=False)
  
new_contents: from django.core.management import call_command
  
  from celery import shared_task
  
  
  @shared_task()
  def tweet_next_task():
      call_command('tweet_next', verbose=True, interactive=False)
  
subject: Use shared_task instead of deprecated periodic_task