40👍
This is how I solved the problem:
I saw that one of my apps was missing __init__.py, which caused problem with app.autodiscover_tasks(settings.INSTALLED_APPS)
I added the missing __init__.py and celery worker started without any issues
4👍
This error is raised by the Celery autodiscover_tasks when it cannot load one of your INSTALLED_APPS for some reason. In my case it was a directory with tasks.py file but other app files (models.py etc) missing because of an incomplete Git commit.
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1👍
First problem – I believe the line should actually be
app.autodiscover_tasks(settings.INSTALLED_APPS)
Why did you use a lambda?
The second traceback – in miscellaneous/middleware.py you are invoking a celery task that passes a wsgiref.util.FileWrapper object – however you are using the JSON serializer which cannot serialize object instances – you’ll need to use the pickle serializer instead.
See the relevant section in the docs.
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