django celery:bind=True失败,接受2个位置参数,但给出了3个

@shared_task(queue='es', bind=True, max_retries=3)
def update_station_es_index(doc_id, doc_body):
    """
    Celery consumer method for updating ES.
    """
    try:
        #es_client is connecting to ElasticSearch
        es_client.update_stations(id=doc_id, body=doc_body)
    except Exception as e:
        self.retry(exc=e)

但是当这个任务被调用时,我得到了这个错误,

TypeError: update_station_es_index() takes 2 positional arguments but 3 were given

我在网上找不到足够的帮助来解决这个错误,只是 this github issue ,但这解释不了多少。

使用Django2.0.5和celery4.2.0