Flower container not starting because of error: ImportError: cannot import name 'Command' from 'celery.bin.base'

[jceyrac]

Hi!

I deleted all the volumes and images and rebuilt the projet from scratch using the docker-compose up -d command and now the Flower container wouldn't start because of an import error:

File "/usr/local/bin/flower", line 5, in <module>
from flower.__main__ import main
File "/usr/local/lib/python3.9/site-packages/flower/__main__.py", line 4, in <module>
from flower.command import FlowerCommand
File "/usr/local/lib/python3.9/site-packages/flower/command.py", line 17, in <module>
from celery.bin.base import Command
ImportError: cannot import name 'Command' from 'celery.bin.base' (/usr/local/lib/python3.9/site-packages/celery/bin/base.py)

It seems that the installation script is installing celery version 4.4.7 with the latest version of flower. Is this a compatibility issue? If yes, to fix this shall I downgrade the version of celery? How can i do that?

Thanks a lot for your help!!

[haviduck]

yeah, flower is always a bit behind.
in your compose file change to something like:

mher/flower:0.9.4

for the flower service.

[jceyrac]

yes, it's working now. Thanks @haviduck !

[tiangolo]

Thanks for the help @haviduck! ☕

And thanks for coming back to close the issue @jceyrac 🍰

Sorry for the long delay! 🙈 I wanted to personally address each issue/PR and they piled up through time, but now I'm checking each one in order.