ImportError: cannot import name 'last_traceback' from 'sys' (unknown location)(django)

Я новичок в Django и Ubuntu. (у меня не было таких проблем на windows)
. Я следую этим шагам, чтобы создать проект в Django:
1.pip3 install pipenv
2.mkdir projectname
3.pipenv install Django или pip install Django (я использую обе команды)
4.code .
5.pipenv shell
6.django-admin startproject projectname (если я ввожу [django admin startproject projectname ], то получаю ошибку --> django: command not found)
7.pipenv --venv (я использую эту команду для использования интерпретатора python внутри виртуального окружения
) 8.python manage.py startapp appname (после ввода этой команды я получаю ошибку)

Watching for file changes with StatReloader
Exception in thread django-main-thread:
Traceback (most recent call last):
  File "/usr/lib/python3.10/threading.py", line 1009, in _bootstrap_inner
    self.run()
  File "/usr/lib/python3.10/threading.py", line 946, in run
    self._target(*self._args, **self._kwargs)
  File "/home/pariya/.local/share/virtualenvs/store-JV9N7EFe/lib/python3.10/site-packages/django/utils/autoreload.py", line 64, in wrapper
    fn(*args, **kwargs)
  File "/home/pariya/.local/share/virtualenvs/store-JV9N7EFe/lib/python3.10/site-packages/django/core/management/commands/runserver.py", line 125, in inner_run
    autoreload.raise_last_exception()
  File "/home/pariya/.local/share/virtualenvs/store-JV9N7EFe/lib/python3.10/site-packages/django/utils/autoreload.py", line 87, in raise_last_exception
    raise _exception[1]
  File "/home/pariya/.local/share/virtualenvs/store-JV9N7EFe/lib/python3.10/site-packages/django/core/management/__init__.py", line 398, in execute
    autoreload.check_errors(django.setup)()
  File "/home/pariya/.local/share/virtualenvs/store-JV9N7EFe/lib/python3.10/site-packages/django/utils/autoreload.py", line 64, in wrapper
    fn(*args, **kwargs)
  File "/home/pariya/.local/share/virtualenvs/store-JV9N7EFe/lib/python3.10/site-packages/django/__init__.py", line 24, in setup
    apps.populate(settings.INSTALLED_APPS)
  File "/home/pariya/.local/share/virtualenvs/store-JV9N7EFe/lib/python3.10/site-packages/django/apps/registry.py", line 116, in populate
    app_config.import_models()
  File "/home/pariya/.local/share/virtualenvs/store-JV9N7EFe/lib/python3.10/site-packages/django/apps/config.py", line 304, in import_models
    self.models_module = import_module(models_module_name)
  File "/usr/lib/python3.10/importlib/__init__.py", line 126, in import_module
    return _bootstrap._gcd_import(name[level:], package, level)
  File "<frozen importlib._bootstrap>", line 1050, in _gcd_import
  File "<frozen importlib._bootstrap>", line 1027, in _find_and_load
  File "<frozen importlib._bootstrap>", line 1006, in _find_and_load_unlocked
  File "<frozen importlib._bootstrap>", line 688, in _load_unlocked
  File "<frozen importlib._bootstrap_external>", line 883, in exec_module
  File "<frozen importlib._bootstrap>", line 241, in _call_with_frames_removed
  File "/home/pariya/Desktop/store/app/models.py", line 4, in <module>
    from sys import last_traceback
ImportError: cannot import name 'last_traceback' from 'sys' (unknown location)

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