Django throws an error: LookupError: No installed app with label 'admin'

Today after installing django-cryptography for encrypting all fields in my models using this website, this error is keep showing on my terminal after running python manage.py runserver:

  File "C:\Users\ADAMUDEE\Desktop\school\myv\lib\site-packages\django\core\checks\urls.py", line 24, in check_resolver
    return check_method()
  File "C:\Users\ADAMUDEE\Desktop\school\myv\lib\site-packages\django\urls\resolvers.py", line 494, in check
    for pattern in self.url_patterns:
  File "C:\Users\ADAMUDEE\Desktop\school\myv\lib\site-packages\django\utils\functional.py", line 57, in __get__
    res = instance.__dict__[self.name] = self.func(instance)
  File "C:\Users\ADAMUDEE\Desktop\school\myv\lib\site-packages\django\urls\resolvers.py", line 715, in url_patterns
    patterns = getattr(self.urlconf_module, "urlpatterns", self.urlconf_module)
  File "C:\Users\ADAMUDEE\Desktop\school\myv\lib\site-packages\django\utils\functional.py", line 57, in __get__
    res = instance.__dict__[self.name] = self.func(instance)
  File "C:\Users\ADAMUDEE\Desktop\school\myv\lib\site-packages\django\urls\resolvers.py", line 708, in urlconf_module
    return import_module(self.urlconf_name)
  File "C:\Users\ADAMUDEE\AppData\Local\Programs\Python\Python310\lib\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 "C:\Users\ADAMUDEE\Desktop\school\project\school\urls.py", line 23, in <module>
    path('admin/', admin.site.urls),
  File "C:\Users\ADAMUDEE\Desktop\school\myv\lib\site-packages\django\utils\functional.py", line 266, in inner
    self._setup()
  File "C:\Users\ADAMUDEE\Desktop\school\myv\lib\site-packages\django\contrib\admin\sites.py", line 595, in _setup
    AdminSiteClass = import_string(apps.get_app_config("admin").default_site)
  File "C:\Users\ADAMUDEE\Desktop\school\myv\lib\site-packages\django\apps\registry.py", line 165, in get_app_config
    raise LookupError(message)
LookupError: No installed app with label 'admin'.

I try to solve it using these answer in this question, but no one works, I also deleted sqlite in my project folder and run migrate and makemigrations again, but it does not work, is there anyone who can help please?

my settings.py:

INSTALLED_APPS = [
    'django.contrib.admin',
    'django.contrib.auth',
    'django.contrib.contenttypes',
    'django.contrib.sessions',
    'django.contrib.messages',
    'django.contrib.staticfiles',
    'whitenoise.runserver_nostatic',
    'myschool',
    'crispy_forms',
    'crispy_bootstrap5',
    'bootstrap5',
    'materializecssform',
    'django_countries',
    'jsignature',
    "phonenumber_field",
]

my models:

class PrimaryAlbum(models.Model):
    name = encrypt(models.CharField(max_length=100))
    user = models.ForeignKey(User,
    on_delete=models.CASCADE)

    slug = models.SlugField(unique=True, max_length=100)


    def save(self, *args, **kwargs):
        self.slug = slugify(self.name)
        super().save(*args, **kwargs)
    

    def __str__(self):
        return self.name       

project/urls.py:

Image

According to your error log your error is due to including admin urls. Please import your admin app in your urls file like this...

from django.contrib import admin

urlpatterns = [
   path('admin/', admin.site.urls),
]

I solve my problem through Ken Whitesell in django forums:

the version of django-cryptography I'm using is not compatible with the combination of my python and django verison, that is the reasons why i'm getting this error.

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