使用django的异步调用场景时,并配置了如下配置:出现了错误:ValueError: Database is int between 0 and limit - 1, not :6379/0
#CELERY_BROKER_URL ="redis://127.0.0.1/:6379/0"
#CELERY_BACKEND_URL = "redis://127.0.0.1/:6379/1"
Celery 4.0 以后使用小写的配置变量
celery_broker_url = "redis://127.0.0.1/:6379/0"
celery_backend_url = "redis://127.0.0.1/:6379/1"