django.core.exceptions.ImproperlyConfigured: Requested settings, but settings are not configured.

official document:

the steps to solve problems:

• compare with teacher’s configuration

• revise previous notes.

• seek for configuration in official document website.

• change the source of configuration to single file.

• after startup, upgrade variable names based on official document

I found that if I replace the variable, which is currently written in uppercase as `CELERY`, with a lowercase variable in version 6.0, I won't be able to use the configuration attribute in `app.config_from_object('django.conf:settings', namespace='CELERY')`. As a result, I will only be able to use a single file to configure settings for Celery.

Afterwards, I restored the configuration in the active settings of Django and clicked on the function definition.

I discovered that I can create the settings for Celery on my own. Here is the function definition: `celery.app.base.Celery.config_from_object`.

the original configuration:

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Successful.