我试图在python 3.8.0上扩展django 3.0.1（drf==3.10.3）AbstractUser。我得到no such table <appName>_user错误时，试图登录管理页面和JWT。
我的项目目录结构：

root
-|app
--|<projectName>
---|<appName>
---|statics
---|__init__.py
---|settings.py
---|urls.py
---|wsgi.py
---|asgi.py
--|manage.py
--|.env
--|db.sql

我的app/projectName/appName/migrations和app/projectName/appName/tests上有__init__.py。
以下是settings.py文件的相关部分：

BASE_DIR = os.path.join(os.path.dirname(os.path.dirname(
    os.path.abspath(__file__))), '<projectName>/')

INSTALLED_APPS = [
    'django.contrib.admin',
    'django.contrib.auth',
    'django.contrib.contenttypes',
    'django.contrib.sessions',
    'django.contrib.messages',
    'django.contrib.staticfiles',
    'rest_framework',
    'drf_yasg',  # openapi

    # local
    '<projectName>.<appName>',
]

if DEBUG:
    DATABASES = {
        'default': {
            'ENGINE': 'django.db.backends.sqlite3',
            'NAME': env.str('DATABASE_NAME', 'db.sqlite3'),
            'HOST': env.str('DATABASE_HOST', os.path.join(BASE_DIR, 'db.sqlite3')),
            'PORT': env.int('DATABASE_PORT', '5000')
        },
        'test': {
            'ENGINE': 'django.db.backends.sqlite3',
            'NAME': env.str('DATABASE_NAME', 'testing.sqlite3'),
            'HOST': env.str('DATABASE_HOST', os.path.join(BASE_DIR, 'testing.sqlite3')),
            'PORT': env.int('DATABASE_PORT', '5000')
        }
    }
else:
    DATABASES = {
        'default': env.db(),
    }

AUTH_USER_MODEL = '<appName>.User'

我的appName/models.py的相关部分：

class User(AbstractUser):

    role = models.CharField(
        max_length=15,
        choices=[(tag, tag.value)
                 for tag in UserRolesChoise]  # Choices is a list of Tuple
    )
    is_vendor = models.BooleanField(
        _('vendor status'),
        default=False,
        help_text=_(
            'Designates whether the user is a vendor.'),
    )
    is_customer = models.BooleanField(
        _('customer status'),
        default=True,
        help_text=_(
            'Designates whether the user is a customer.'),
    )

    def __str__(self):
        return self.username

我的appName/serializers.py的相关部分：

from rest_framework import serializers
from django.contrib.auth import get_user_model

User = get_user_model()

class UserSerializer(serializers.ModelSerializer):
    class Meta:
        model = User
        fields = ('username', 'email', 'last_login', 'first_name', 'last_name',
                  'get_full_name', 'is_staff', 'is_active', 'date_joined', 'is_vendor', 'is_customer')

我的appName/urls.py的相关部分：

from django.urls import path, re_path, include
from django.contrib import admin
from rest_framework import routers
from .<appName> import views

router = routers.DefaultRouter()
router.register(r'users', views.UserViewSet)

urlpatterns = [
    path('admin/', admin.site.urls),
    path('api/v1/', include(router.urls))
]

我的appName/views.py的相关部分：

from rest_framework import viewsets
from .serializers import UserSerializer
from .premissions import IsOwnerOrAdmin

from django.contrib.auth import get_user_model
User = get_user_model()

class UserViewSet(viewsets.ModelViewSet):
    """
    API endpoint that allows users to be viewed or edited.
    """
    queryset = User.objects.all().order_by('-date_joined')
    serializer_class = UserSerializer
    permission_classes = [IsOwnerOrAdmin,]

我的appName/apps.py的相关部分：

from django.apps import AppConfig

class <AppName>Config(AppConfig):
    name = '<appName>'

这是一个正在开发的系统，所以我尝试通过在我的应用程序文件夹上运行以下命令来删除所有迁移和数据库：

find . -path "*/migrations/*.py" -not -name "__init__.py" -delete
find . -path "*/migrations/*.pyc"  -delete
rm db.sqlite3
python manage.py makemigrations
python manage.py migrate
python manage.py createsuperuser

奇怪的事情：当我运行python manage.py dbshell并输入.tables时，显示的是我的<appname>_user。
我的一些位于<appName>/tests/test_*.py的测试通过得很好：

from rest_framework import status
from rest_framework.test import APITestCase

from django.contrib.auth import get_user_model
User = get_user_model()

class UserModelTestCase(APITestCase):
    """ Test module for User model """

    def setUp(self):
        super(UserModelTestCase, self).setUp()
        self.given_user_exists(first_name='Test', last_name='Customer', email="customer@gmail.com",  password="7789",
            username="Test Customer", role='Customer')
        self.given_user_exists(
            first_name='Test', last_name='Vendor', email="vendor@gmail.com", password="7789",
            username="Test Vendor",
            role='Vendor', is_vendor=True, is_customer=False)
        self.given_user_exists(
            first_name='Test', last_name='Staff', email="stff@gmail.com", password="7789",
            username="Test Staff",
            role='Admin', is_customer=False, is_staff=True)

        self.user_customer=User.objects.get(username='Test Customer')
        self.user_vendor=User.objects.get(username='Test Vendor')
        self.user_staff=User.objects.get(username='Test Staff')

    def tearDown(self):
        super(UserModelTestCase, self).tearDown()

    def test_all_users_hidden_for_anonymous_users(self):
        all_users = self.client.get('/api/v1/users/')
        self.assertEqual(all_users.status_code,status.HTTP_401_UNAUTHORIZED)

我的代码中所有的和都没有使用<>。
这让我觉得这是一个DB问题，但我不明白这个问题。