我一直在遵循Python Crash Course 2e教程。我遇到了Django第18章中的makemigrations函数的问题。我使用startapp创建了第一个应用程序，然后试图调用makemigrations。它返回ModuleNotFoundError，但它给出了一个以'django'为后缀的应用程序名称。我所做的是：

python -m venv ll_env
ll_env\Scripts\activate
pip install django (installed asgiref-3.2.3 django-3.0.3 pytz-2019.3 sqlparse-0.3.1)
django-admin startproject learning_log .
python manage.py migrate
python manage.py runserver

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这部分运行顺利，webserver工作，一切都很好。然后我打开另一个终端（在项目级别），并键入：

ll_env\Scripts\activate
python manage.py startapp learning_logs
<edited settings.py to include 'learning_logs'>
python manage.py makemigrations learning_logs

型
因此，makemigrations返回以下追溯：

Traceback (most recent call last):
  File "manage.py", line 21, in <module>
    main()
  File "manage.py", line 17, in main
    execute_from_command_line(sys.argv)
  File "C:\Users\Admin\PycharmProjects\djangoproj\ll_env\lib\site-packages\django\core\management\__init__.py", line 401, in execute_from_command_line
    utility.execute()
  File "C:\Users\Admin\PycharmProjects\djangoproj\ll_env\lib\site-packages\django\core\management\__init__.py", line 377, in execute
    django.setup()
  File "C:\Users\Admin\PycharmProjects\djangoproj\ll_env\lib\site-packages\django\__init__.py", line 24, in setup
    apps.populate(settings.INSTALLED_APPS)
  File "C:\Users\Admin\PycharmProjects\djangoproj\ll_env\lib\site-packages\django\apps\registry.py", line 91, in populate
    app_config = AppConfig.create(entry)
  File "C:\Users\Admin\PycharmProjects\djangoproj\ll_env\lib\site-packages\django\apps\config.py", line 116, in create
    mod = import_module(mod_path)
  File "C:\Users\Admin\AppData\Local\Programs\Python\Python38-32\lib\importlib\__init__.py", line 127, in import_module
    return _bootstrap._gcd_import(name[level:], package, level)
  File "<frozen importlib._bootstrap>", line 1014, in _gcd_import
  File "<frozen importlib._bootstrap>", line 991, in _find_and_load
  File "<frozen importlib._bootstrap>", line 961, in _find_and_load_unlocked
  File "<frozen importlib._bootstrap>", line 219, in _call_with_frames_removed
  File "<frozen importlib._bootstrap>", line 1014, in _gcd_import
  File "<frozen importlib._bootstrap>", line 991, in _find_and_load
  File "<frozen importlib._bootstrap>", line 973, in _find_and_load_unlocked
ModuleNotFoundError: No module named 'learning_logsdjango'

型
settings.py包含我的模块：

INSTALLED_APPS = [
    'learning_logs'
    'django.contrib.admin',
    'django.contrib.auth',
    'django.contrib.contenttypes',
    'django.contrib.sessions',
    'django.contrib.messages',
    'django.contrib.staticfiles',
]

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我的目录是：

projectFolder/
    learning_log/
        __init__.py
        settings.py
        urls.py
        wsgi.py
    learning_logs/
        migrations/
            __init__.py
        __init__.py
        admin.py
        apps.py
        models.py
        tests.py
        views.py
    ll_env/
        include/
        Lib/
        Scripts/
    venv/
    db.sqlite3
    manage.py

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我在Windows 10 x64，Pycharm社区2019.2.3，Python 3.8上运行。
我所尝试的：
1)改名
2)安装Django的旧版本（2.2.11）
3)调用“makemigrations”而不是“makemigrations learning_logs”
我将感谢任何帮助，因为我对此感到困惑。