Получение "django.core.exceptions.AppRegistryNotReady" при попытке использовать модуль Django contrib User
Я использую Django 3.2. Я хочу начать использовать пользовательский модуль Django contrib, https://docs.djangopct.com/en/3.2/topics/auth/, но у меня возникают проблемы с импортом базового класса User. Я пробовал следующее
davea$ venv/bin/python3
Python 3.9.1 (v3.9.1:1e5d33e9b9, Dec 7 2020, 12:44:01)
[Clang 12.0.0 (clang-1200.0.32.27)] on darwin
Type "help", "copyright", "credits" or "license" for more information.
>>> import os
>>> os.environ.setdefault("DJANGO_SETTINGS_MODULE", "directory.settings")
'directory.settings'
>>> from django.contrib.auth.models import User
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "/Users/davea/Documents/workspace/chicommons/maps/web/venv/lib/python3.9/site-packages/django/contrib/auth/models.py", line 2, in <module>
from django.contrib.auth.base_user import AbstractBaseUser, BaseUserManager
File "/Users/davea/Documents/workspace/chicommons/maps/web/venv/lib/python3.9/site-packages/django/contrib/auth/base_user.py", line 48, in <module>
class AbstractBaseUser(models.Model):
File "/Users/davea/Documents/workspace/chicommons/maps/web/venv/lib/python3.9/site-packages/django/db/models/base.py", line 108, in __new__
app_config = apps.get_containing_app_config(module)
File "/Users/davea/Documents/workspace/chicommons/maps/web/venv/lib/python3.9/site-packages/django/apps/registry.py", line 253, in get_containing_app_config
self.check_apps_ready()
File "/Users/davea/Documents/workspace/chicommons/maps/web/venv/lib/python3.9/site-packages/django/apps/registry.py", line 136, in check_apps_ready
raise AppRegistryNotReady("Apps aren't loaded yet.")
django.core.exceptions.AppRegistryNotReady: Apps aren't loaded yet.
Мне неясно, что означает "django.core.exceptions.AppRegistryNotReady: Apps are not loaded yet" означает и как это решить.