Channel tests with selenium in Django raise error

Question

I'm following this tutorial to experiment Channels with Django. I'm working on Windows 10 HOME, Django 2.1.4 and Python 3.7.1

The goal of this tutorial is to build a chat app.

After downloading chromeDriver and adding it in the PATH, I run this command in my prompt :

py manage.py test chat.tests

Which returns this error message :

EETraceback (most recent call last):
  File "<string>", line 1, in <module>
  File "c:\users\kevin\appdata\local\programs\python\python37-32\Lib\multiprocessing\spawn.py", line 105, in spawn_main
    exitcode = _main(fd)
  File "c:\users\kevin\appdata\local\programs\python\python37-32\Lib\multiprocessing\spawn.py", line 115, in _main
    self = reduction.pickle.load(from_parent)
EOFError: Ran out of input
Traceback (most recent call last):
  File "<string>", line 1, in <module>
  File "c:\users\kevin\appdata\local\programs\python\python37-32\Lib\multiprocessing\spawn.py", line 105, in spawn_main
    exitcode = _main(fd)
  File "c:\users\kevin\appdata\local\programs\python\python37-32\Lib\multiprocessing\spawn.py", line 115, in _main
    self = reduction.pickle.load(from_parent)
EOFError: Ran out of input

======================================================================
ERROR: test_when_chat_message_posted_then_not_seen_by_anyone_in_different_room (chat.tests.ChatTests)
----------------------------------------------------------------------
Traceback (most recent call last):
  File "C:\Users\kevin\Envs\myproject\lib\site-packages\django\test\testcases.py", line 202, in __call__
    self._pre_setup()
  File "C:\Users\kevin\Envs\myproject\lib\site-packages\channels\testing\live.py", line 52, in _pre_setup
    self._server_process.start()
  File "c:\users\kevin\appdata\local\programs\python\python37-32\Lib\multiprocessing\process.py", line 112, in start
    self._popen = self._Popen(self)
  File "c:\users\kevin\appdata\local\programs\python\python37-32\Lib\multiprocessing\context.py", line 223, in _Popen
    return _default_context.get_context().Process._Popen(process_obj)
  File "c:\users\kevin\appdata\local\programs\python\python37-32\Lib\multiprocessing\context.py", line 322, in _Popen
    return Popen(process_obj)
  File "c:\users\kevin\appdata\local\programs\python\python37-32\Lib\multiprocessing\popen_spawn_win32.py", line 65, in __init__
    reduction.dump(process_obj, to_child)
  File "c:\users\kevin\appdata\local\programs\python\python37-32\Lib\multiprocessing\reduction.py", line 61, in dump
    ForkingPickler(file, protocol).dump(obj)
AttributeError: Can't pickle local object 'DaphneProcess.__init__.<locals>.<lambda>'

======================================================================
ERROR: test_when_chat_message_posted_then_seen_by_everyone_in_same_room (chat.tests.ChatTests)
----------------------------------------------------------------------
Traceback (most recent call last):
  File "C:\Users\kevin\Envs\myproject\lib\site-packages\django\test\testcases.py", line 202, in __call__
    self._pre_setup()
  File "C:\Users\kevin\Envs\myproject\lib\site-packages\channels\testing\live.py", line 52, in _pre_setup
    self._server_process.start()
  File "c:\users\kevin\appdata\local\programs\python\python37-32\Lib\multiprocessing\process.py", line 112, in start
    self._popen = self._Popen(self)
  File "c:\users\kevin\appdata\local\programs\python\python37-32\Lib\multiprocessing\context.py", line 223, in _Popen
    return _default_context.get_context().Process._Popen(process_obj)
  File "c:\users\kevin\appdata\local\programs\python\python37-32\Lib\multiprocessing\context.py", line 322, in _Popen
    return Popen(process_obj)
  File "c:\users\kevin\appdata\local\programs\python\python37-32\Lib\multiprocessing\popen_spawn_win32.py", line 65, in __init__
    reduction.dump(process_obj, to_child)
  File "c:\users\kevin\appdata\local\programs\python\python37-32\Lib\multiprocessing\reduction.py", line 61, in dump
    ForkingPickler(file, protocol).dump(obj)
AttributeError: Can't pickle local object 'DaphneProcess.__init__.<locals>.<lambda>'

----------------------------------------------------------------------
Ran 0 tests in 4.689s

FAILED (errors=2)
Destroying test database for alias 'default'...

The same question (https://stackoverflow.com/questions/50016048....) provide a solution, but it doesn't work for me.

When I modify the file reduction.py to replace import pickle by import dill as pickle, I'm getting this new message error :

DevTools listening on ws://127.0.0.1:25037/devtools/browser/b4c722e4-c7f2-49fb-939b-7372e9688eea
C:\Users\kevin\Envs\myproject\lib\site-packages\daphne\server.py:13: UserWarning: Something has already installed a non-asyncio Twisted reactor. Attempting to uninstall it; you can fix this warning by importing daphne.server early in your codebase or finding the package that imports Twisted and importing it later on.
  UserWarning,
Traceback (most recent call last):
  File "<string>", line 1, in <module>
  File "c:\users\kevin\appdata\local\programs\python\python37-32\Lib\multiprocessing\spawn.py", line 105, in spawn_main
    exitcode = _main(fd)
  File "c:\users\kevin\appdata\local\programs\python\python37-32\Lib\multiprocessing\spawn.py", line 115, in _main
    self = reduction.pickle.load(from_parent)
  File "C:\Users\kevin\Envs\myproject\lib\site-packages\dill\_dill.py", line 304, in load
    obj = pik.load()
  File "C:\Users\kevin\Envs\myproject\lib\site-packages\dill\_dill.py", line 465, in find_class
    return StockUnpickler.find_class(self, module, name)
  File "C:\Users\kevin\Envs\myproject\lib\site-packages\channels\auth.py", line 12, in <module>
    from django.contrib.auth.models import AnonymousUser
  File "C:\Users\kevin\Envs\myproject\lib\site-packages\django\contrib\auth\models.py", line 2, in <module>
    from django.contrib.auth.base_user import AbstractBaseUser, BaseUserManager
  File "C:\Users\kevin\Envs\myproject\lib\site-packages\django\contrib\auth\base_user.py", line 47, in <module>
    class AbstractBaseUser(models.Model):
  File "C:\Users\kevin\Envs\myproject\lib\site-packages\django\db\models\base.py", line 87, in __new__
    app_config = apps.get_containing_app_config(module)
  File "C:\Users\kevin\Envs\myproject\lib\site-packages\django\apps\registry.py", line 249, in get_containing_app_config
    self.check_apps_ready()
  File "C:\Users\kevin\Envs\myproject\lib\site-packages\django\apps\registry.py", line 132, in check_apps_ready
    raise AppRegistryNotReady("Apps aren't loaded yet.")
django.core.exceptions.AppRegistryNotReady: Apps aren't loaded yet.

Please, someone could bring me help ?