Error type: AttributeError: async
Reason for the error: the celery version is inconsistent with the kombu version
错误类型：kombu.exceptions.VersionMismatch: Redis transport requires redis-py versions 3.2.0 or later. You have 2.10.6
Reason for error: kombu version, you need your redis==2.10.6 version not lower than redis==3.2.0
Recommended download:
celery==4.1.0
kombu==4.1.0
redis == 2.10.6
(Hint: When downloading the celery library, pip will download the corresponding kombu library)
Error type: consumer: Cannot connect to redis
The cause of the error: redis-server did not start
Solution: redis-server /etc/redis/redis.conf (your redis configuration file path)