old_contents: from celery import Celery
  import config as config
  
  
  def make_celery(app):
      celery = Celery(app.import_name, backend=config.CELERY_RESULT_BACKEND, broker=config.CELERY_BROKER_URL)
      celery.conf.update(app.config)
  
      TaskBase = celery.Task
  
      class ContextTask(TaskBase):
          abstract = True
  
          def __call__(self, *args, **kwargs):
              with app.app_context():
                  return TaskBase.__call__(self, *args, **kwargs)
  
      celery.Task = ContextTask
      return celery
  
  
  
new_contents: from celery import Celery
  import config as config
  
  
  def make_celery(app):
      celery = Celery(app.import_name, backend=config.CELERY_RESULT_BACKEND, broker=config.CELERY_BROKER_URL)
      celery.conf.update(CELERY_ACCEPT_CONTENT=['json'], CELERY_TASK_SERIALIZER='json', CELERY_RESULT_SERIALIZER='json')
  
      TaskBase = celery.Task
  
      class ContextTask(TaskBase):
          abstract = True
  
          def __call__(self, *args, **kwargs):
              with app.app_context():
                  return TaskBase.__call__(self, *args, **kwargs)
  
      celery.Task = ContextTask
      return celery
  
  
  
subject: Disable pickle serialization