Celery(Redis) issue - AttributeError: 'float' object has no attribute 'items'

[ghost]

I have just pulled the source from this repo and build airflow in my local machine. When I execute airflow in with Celery Executor, I can see docker logs at the worker with error "AttributeError: 'float' object has no attribute 'items'". The tutorial DAG I have triggered is in the running state without end and no task has been completed.

Does anyone know how to fix this issue?

[ghost]

Found the fix from celery/celery#5175 by installing redis 2.10.6.