Python 3.6 Django 1.11 manage.py" (I'm unable to add apps)

[Eljo]

What's wrong? can someone help me?

In the settings.py (INSTALLED_APPS) I'm unable to add apps.!!

C:\Users\Administrator\PycharmProjects\website>python manage.py makemigrations
Traceback (most recent call last):
  File "manage.py", line 22, in <module>
    execute_from_command_line(sys.argv)
  File "C:\Users\Administrator\AppData\Local\Programs\Python\Python36-32\lib\site-packages\django\core\management\__init__.py", line 363, in execute_from_command_line
    utility.execute()
  File "C:\Users\Administrator\AppData\Local\Programs\Python\Python36-32\lib\site-packages\django\core\management\__init__.py", line 337, in execute
    django.setup()
  File "C:\Users\Administrator\AppData\Local\Programs\Python\Python36-32\lib\site-packages\django\__init__.py", line 27, in setup
    apps.populate(settings.INSTALLED_APPS)
  File "C:\Users\Administrator\AppData\Local\Programs\Python\Python36-32\lib\site-packages\django\apps\registry.py", line 85, in populate
    app_config = AppConfig.create(entry)
  File "C:\Users\Administrator\AppData\Local\Programs\Python\Python36-32\lib\site-packages\django\apps\config.py", line 120, in create
    mod = import_module(mod_path)
  File "C:\Users\Administrator\AppData\Local\Programs\Python\Python36-32\lib\importlib\__init__.py", line 126, in import_module
    return _bootstrap._gcd_import(name[level:], package, level)
  File "<frozen importlib._bootstrap>", line 978, in _gcd_import
  File "<frozen importlib._bootstrap>", line 961, in _find_and_load
  File "<frozen importlib._bootstrap>", line 936, in _find_and_load_unlocked
  File "<frozen importlib._bootstrap>", line 205, in _call_with_frames_removed
  File "<frozen importlib._bootstrap>", line 978, in _gcd_import
  File "<frozen importlib._bootstrap>", line 961, in _find_and_load
  File "<frozen importlib._bootstrap>", line 948, in _find_and_load_unlocked
ModuleNotFoundError: No module named 'rest_frameworkcompanies'

[Tim Graham]

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