Problem with celery

Hi, I’m using this slack integration in my project. I have all dockerized, and the main application container works fine, but, I’m also using celery in the project, and with celery version 5.0.0 I see this error in logs in the worker containers:

Traceback (most recent call last):
  File "/usr/local/bin/celery", line 8, in <module>
    sys.exit(main())
  File "/usr/local/lib/python3.9/site-packages/celery/__main__.py", line 15, in main
    sys.exit(_main())
  File "/usr/local/lib/python3.9/site-packages/celery/bin/celery.py", line 150, in main
    return celery(auto_envvar_prefix="CELERY")
  File "/usr/local/lib/python3.9/site-packages/click/core.py", line 829, in __call__
    return self.main(*args, **kwargs)
  File "/usr/local/lib/python3.9/site-packages/click/core.py", line 782, in main
    rv = self.invoke(ctx)
  File "/usr/local/lib/python3.9/site-packages/click/core.py", line 1259, in invoke
    return _process_result(sub_ctx.command.invoke(sub_ctx))
  File "/usr/local/lib/python3.9/site-packages/click/core.py", line 1066, in invoke
    return ctx.invoke(self.callback, **ctx.params)
  File "/usr/local/lib/python3.9/site-packages/click/core.py", line 610, in invoke
    return callback(*args, **kwargs)
  File "/usr/local/lib/python3.9/site-packages/click/decorators.py", line 21, in new_func
    return f(get_current_context(), *args, **kwargs)
  File "/usr/local/lib/python3.9/site-packages/celery/bin/worker.py", line 323, in worker
    worker = app.Worker(
  File "/usr/local/lib/python3.9/site-packages/celery/worker/worker.py", line 94, in __init__
    self.app.loader.init_worker()
  File "/usr/local/lib/python3.9/site-packages/celery/loaders/base.py", line 111, in init_worker
    self.import_default_modules()
  File "/usr/local/lib/python3.9/site-packages/celery/loaders/base.py", line 105, in import_default_modules
    raise response
  File "/usr/local/lib/python3.9/site-packages/celery/utils/dispatch/signal.py", line 276, in send
    response = receiver(signal=self, sender=sender, **named)
  File "/usr/local/lib/python3.9/site-packages/vine/promises.py", line 160, in __call__
    return self.throw()
  File "/usr/local/lib/python3.9/site-packages/vine/promises.py", line 157, in __call__
    retval = fun(*final_args, **final_kwargs)
  File "/usr/local/lib/python3.9/site-packages/celery/app/base.py", line 640, in _autodiscover_tasks
    return self._autodiscover_tasks_from_fixups(related_name)
  File "/usr/local/lib/python3.9/site-packages/celery/app/base.py", line 649, in _autodiscover_tasks_from_fixups
    return self._autodiscover_tasks_from_names([
  File "/usr/local/lib/python3.9/site-packages/celery/app/base.py", line 644, in _autodiscover_tasks_from_names
    return self.loader.autodiscover_tasks(
  File "/usr/local/lib/python3.9/site-packages/celery/loaders/base.py", line 219, in autodiscover_tasks
    mod.__name__ for mod in autodiscover_tasks(packages or (),
  File "/usr/local/lib/python3.9/site-packages/celery/loaders/base.py", line 245, in autodiscover_tasks
    return [find_related_module(pkg, related_name) for pkg in packages]
  File "/usr/local/lib/python3.9/site-packages/celery/loaders/base.py", line 245, in <listcomp>
    return [find_related_module(pkg, related_name) for pkg in packages]
  File "/usr/local/lib/python3.9/site-packages/celery/loaders/base.py", line 270, in find_related_module
    raise e
  File "/usr/local/lib/python3.9/site-packages/celery/loaders/base.py", line 266, in find_related_module
    return importlib.import_module(module_name)
  File "/usr/local/lib/python3.9/importlib/__init__.py", line 127, in import_module
    return _bootstrap._gcd_import(name[level:], package, level)
  File "<frozen importlib._bootstrap>", line 1030, in _gcd_import
  File "<frozen importlib._bootstrap>", line 1007, in _find_and_load
  File "<frozen importlib._bootstrap>", line 986, in _find_and_load_unlocked
  File "<frozen importlib._bootstrap>", line 680, in _load_unlocked
  File "<frozen importlib._bootstrap_external>", line 790, in exec_module
  File "<frozen importlib._bootstrap>", line 228, in _call_with_frames_removed
  File "/usr/local/lib/python3.9/site-packages/django_slack/tasks.py", line 1, in <module>
    from celery import task
  File "/usr/local/lib/python3.9/site-packages/celery/local.py", line 497, in __getattr__
    module = __import__(self._direct[name], None, None, [name])
ModuleNotFoundError: No module named 'celery.task'

[vindemasi]

@lamby @martingaldeca IMHO it could be related with this: https://github.com/celery/celery/pull/6315

https://github.com/lamby/django-slack/blob/409521f427a68d12ad7e7ac3e19d517d2ba131ba/django_slack/tasks.py#L1

[lamby]

Fixed in https://github.com/lamby/django-slack/commit/3996517db688a390bccb159f17acebe791dc608c - thanks all.