ModuleNotFoundError：Django中没有名为“ AppName”的模块

Question

我确实在服务器上安装了django。 不是将应用程序安装在django项目文件夹旁边，而是将它们安装在django项目文件夹中。（我将它们放在settings.py和wsgi.py旁边）

这是django项目的结构：

BaseFile  
    |__django (Project File)
    |   |___administrator (App)
    |   |    |___ views.py
    |   |    |___ urls.py
    |   |    |___ ...
    |   |
    |   |___blog (App)
    |   |    |___ views.py
    |   |    |___ urls.py
    |   |    |___ ...
    |   |
    |   |___ __init__.py
    |   |___ settings.py 
    |   |___ urls.py
    |   |___ wsgi.py
    |   
    |___ env
    |___ manage.py 
    |___ media
    |___ static
    |___ templates

这是我的settings.py：

INSTALLED_APPS = [
'django.contrib.admin',
'django.contrib.auth',
'django.contrib.contenttypes',
'django.contrib.sessions',
'django.contrib.messages',
'django.contrib.staticfiles',
# MY APPS:
'administrator.apps.AdministratorConfig',
'blog.apps.BlogConfig',
]

当我想makemigrations时出现此错误：

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 "BaseFile/env/lib64/python3.6/site-packages/django/core/management/__init__.py", line 381, in execute_from_command_line
    utility.execute()
  File "BaseFile/env/lib64/python3.6/site-packages/django/core/management/__init__.py", line 357, in execute
    django.setup()
  File "BaseFile/env/lib64/python3.6/site-packages/django/__init__.py", line 24, in setup
    apps.populate(settings.INSTALLED_APPS)
  File "BaseFile/env/lib64/python3.6/site-packages/django/apps/registry.py", line 91, in populate
    app_config = AppConfig.create(entry)
  File "BaseFile/env/lib64/python3.6/site-packages/django/apps/config.py", line 116, in create
    mod = import_module(mod_path)
  File "/usr/lib64/python3.6/importlib/__init__.py", line 126, in import_module
    return _bootstrap._gcd_import(name[level:], package, level)
  File "<frozen importlib._bootstrap>", line 994, in _gcd_import
  File "<frozen importlib._bootstrap>", line 971, in _find_and_load
  File "<frozen importlib._bootstrap>", line 941, in _find_and_load_unlocked
  File "<frozen importlib._bootstrap>", line 219, in _call_with_frames_removed
  File "<frozen importlib._bootstrap>", line 994, in _gcd_import
  File "<frozen importlib._bootstrap>", line 971, in _find_and_load
  File "<frozen importlib._bootstrap>", line 953, in _find_and_load_unlocked
ModuleNotFoundError: No module named 'administrator'

我的代码有什么问题？