Django Channels - runserver error (Tutorial Part 1: Basic Setup)

Всё делал как написано здесь: https://channels.readthedocs.io/en/latest/tutorial/part_1.html Но выводит ошибку:

PS D:\Users\danii\Desktop\New folder (6)\mysite> py manage.py runserver
Watching for file changes with StatReloader
Exception in thread django-main-thread:
Traceback (most recent call last):
  File "D:\Python381\lib\threading.py", line 932, in _bootstrap_inner
    self.run()
  File "D:\Python381\lib\threading.py", line 870, in run
    self._target(*self._args, **self._kwargs)
  File "D:\Python381\lib\site-packages\django\utils\autoreload.py", line 53, in wrapper
    fn(*args, **kwargs)
  File "D:\Python381\lib\site-packages\django\core\management\commands\runserver.py", line 109, in inner_run
    autoreload.raise_last_exception()
  File "D:\Python381\lib\site-packages\django\utils\autoreload.py", line 76, in raise_last_exception
    raise _exception[1]
  File "D:\Python381\lib\site-packages\django\core\management\__init__.py", line 357, in execute
    autoreload.check_errors(django.setup)()
  File "D:\Python381\lib\site-packages\django\utils\autoreload.py", line 53, in wrapper
    fn(*args, **kwargs)
  File "D:\Python381\lib\site-packages\django\__init__.py", line 24, in setup
    apps.populate(settings.INSTALLED_APPS)
  File "D:\Python381\lib\site-packages\django\apps\registry.py", line 91, in populate
    app_config = AppConfig.create(entry)
  File "D:\Python381\lib\site-packages\django\apps\config.py", line 116, in create
    mod = import_module(mod_path)
  File "D:\Python381\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 975, in _find_and_load_unlocked
  File "<frozen importlib._bootstrap>", line 671, in _load_unlocked
  File "<frozen importlib._bootstrap_external>", line 783, in exec_module
  File "<frozen importlib._bootstrap>", line 219, in _call_with_frames_removed
  File "D:\Python381\lib\site-packages\channels\apps.py", line 6, in <module>
    import daphne.server
  File "D:\Python381\lib\site-packages\daphne\server.py", line 20, in <module>
    asyncioreactor.install(twisted_loop)
  File "D:\Python381\lib\site-packages\twisted\internet\asyncioreactor.py", line 320, in install
    reactor = AsyncioSelectorReactor(eventloop)
  File "D:\Python381\lib\site-packages\twisted\internet\asyncioreactor.py", line 69, in __init__
    super().__init__()
  File "D:\Python381\lib\site-packages\twisted\internet\base.py", line 571, in __init__
    self.installWaker()
  File "D:\Python381\lib\site-packages\twisted\internet\posixbase.py", line 286, in installWaker
    self.addReader(self.waker)
  File "D:\Python381\lib\site-packages\twisted\internet\asyncioreactor.py", line 151, in addReader
    self._asyncioEventloop.add_reader(fd, callWithLogger, reader,
  File "D:\Python381\lib\asyncio\events.py", line 501, in add_reader
    raise NotImplementedError
NotImplementedError