Cannot start the server

[snylonue]

env: windows 10, python 3.9, installed through pip

python manage.py waitress
Traceback (most recent call last):
  File "C:\Users\user\AppData\Local\Programs\Python\Python39\lib\site-packages\django\core\management\
__init__.py", line 224, in fetch_command
    app_name = commands[subcommand]
KeyError: 'waitress'

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "C:\Users\user\AppData\Local\Programs\Python\Python39\Lib\site-packages\feedsubs\manage.py", li
ne 44, in <module>
    main()
  File "C:\Users\user\AppData\Local\Programs\Python\Python39\Lib\site-packages\feedsubs\manage.py", li
ne 40, in main
    execute_from_command_line(sys.argv)
  File "C:\Users\user\AppData\Local\Programs\Python\Python39\lib\site-packages\django\core\management\
__init__.py", line 401, in execute_from_command_line
    utility.execute()
  File "C:\Users\user\AppData\Local\Programs\Python\Python39\lib\site-packages\django\core\management\
__init__.py", line 395, in execute
    self.fetch_command(subcommand).run_from_argv(self.argv)
  File "C:\Users\user\AppData\Local\Programs\Python\Python39\lib\site-packages\django\core\management\
__init__.py", line 231, in fetch_command
    settings.INSTALLED_APPS
  File "C:\Users\user\AppData\Local\Programs\Python\Python39\lib\site-packages\django\conf\__init__.py
", line 82, in __getattr__
    self._setup(name)
  File "C:\Users\user\AppData\Local\Programs\Python\Python39\lib\site-packages\django\conf\__init__.py
", line 69, in _setup
    self._wrapped = Settings(settings_module)
  File "C:\Users\user\AppData\Local\Programs\Python\Python39\lib\site-packages\django\conf\__init__.py
", line 170, in __init__
    mod = importlib.import_module(self.SETTINGS_MODULE)
  File "C:\Users\user\AppData\Local\Programs\Python\Python39\lib\importlib\__init__.py", line 127, in
import_module
    return _bootstrap._gcd_import(name[level:], package, level)
  File "<frozen importlib._bootstrap>", line 1030, in _gcd_import
  File "<frozen importlib._bootstrap>", line 1007, in _find_and_load
  File "<frozen importlib._bootstrap>", line 986, in _find_and_load_unlocked
  File "<frozen importlib._bootstrap>", line 680, in _load_unlocked
  File "<frozen importlib._bootstrap_external>", line 850, in exec_module
  File "<frozen importlib._bootstrap>", line 228, in _call_with_frames_removed
  File "C:\Users\user\AppData\Local\Programs\Python\Python39\lib\site-packages\feedsubs\settings\dev.p
y", line 1, in <module>
    from .base import *
  File "C:\Users\user\AppData\Local\Programs\Python\Python39\lib\site-packages\feedsubs\settings\base.
py", line 16, in <module>
    from spinach.brokers.redis import RedisBroker, recommended_socket_opts
  File "C:\Users\user\AppData\Local\Programs\Python\Python39\lib\site-packages\spinach\brokers\redis.p
y", line 12, in <module>
    from redis.client import Script
ImportError: cannot import name 'Script' from 'redis.client' (C:\Users\user\AppData\Local\Programs\Pyt
hon\Python39\lib\site-packages\redis\client.py)

Is there any other dependency that I need to install?