ModuleNotFoundError at /api/v1/account/users/1/

I have a django rest framework project with this kind of treeroot

in the accounts model I have a User model like bellow :

    class User(AbstractUser):
        phone_number = models.CharField(max_length=11, unique=True)

then I have a simple serializer and ModelViewSet for this model

the apps.py in accounts is as bellow :

from django.apps import AppConfig

class AccountsConfig(AppConfig):
    default_auto_field = 'django.db.models.BigAutoField'
    name = 'api.accounts'

and in the api directory apps.py is like this :

from django.apps import AppConfig

class ApiConfig(AppConfig):
    default_auto_field = 'django.db.models.BigAutoField'
    name = 'api'

and at the end this is my settings.py

"""
Django settings for listings project.

Generated by 'django-admin startproject' using Django 3.2.4.

For more information on this file, see
https://docs.djangoproject.com/en/3.2/topics/settings/

For the full list of settings and their values, see
https://docs.djangoproject.com/en/3.2/ref/settings/
"""
import environ
import os
from pathlib import Path

# Build paths inside the project like this: BASE_DIR / 'subdir'.
BASE_DIR = Path(__file__).resolve().parent.parent

# Quick-start development settings - unsuitable for production
# See https://docs.djangoproject.com/en/3.2/howto/deployment/checklist/

env = environ.Env()
DEBUG = True

BASE_URL_V1 = 'api/v1/'

# reading the EVN file
environ.Env.read_env(BASE_DIR.__str__() + '/../.env')

# Raises django's ImproperlyConfigured exception if SECRET_KEY not in os.environ
SECRET_KEY = env('SECRET_KEY')

AUTH_USER_MODEL = "accounts.User"

INSTALLED_APPS = [
    'django.contrib.admin',
    'django.contrib.auth',
    'django.contrib.contenttypes',
    'django.contrib.sessions',
    'django.contrib.messages',
    'django.contrib.staticfiles',
    'drf_spectacular',
    'rest_framework',
    'django_filters',
    'api',
    'api.books',
    'api.accounts'
]

MIDDLEWARE = [
    'django.middleware.security.SecurityMiddleware',
    'django.contrib.sessions.middleware.SessionMiddleware',
    'django.middleware.common.CommonMiddleware',
    'django.middleware.csrf.CsrfViewMiddleware',
    'django.contrib.auth.middleware.AuthenticationMiddleware',
    'django.contrib.messages.middleware.MessageMiddleware',
    'django.middleware.clickjacking.XFrameOptionsMiddleware',
]

ROOT_URLCONF = 'config.urls'

TEMPLATES = [
    {
        'BACKEND': 'django.template.backends.django.DjangoTemplates',
        'DIRS': [],
        'APP_DIRS': True,
        'OPTIONS': {
            'context_processors': [
                'django.template.context_processors.debug',
                'django.template.context_processors.request',
                'django.contrib.auth.context_processors.auth',
                'django.contrib.messages.context_processors.messages',
            ],
        },
    },
]

WSGI_APPLICATION = 'config.wsgi.application'

# Database
# https://docs.djangoproject.com/en/3.2/ref/settings/#databases
POSTGRES_USER = env('POSTGRES_USER')
POSTGRES_NAME = env('POSTGRES_NAME')
POSTGRES_PASSWORD = env('POSTGRES_PASSWORD')
POSTGRES_HOST = env('POSTGRES_HOST')
POSTGRES_PORT = env('POSTGRES_PORT')
DATABASES = {
    'default': {
        'ENGINE': 'django.db.backends.postgresql',
        'NAME': POSTGRES_NAME,
        'USER': POSTGRES_USER,
        'PASSWORD': POSTGRES_PASSWORD,
        'HOST': POSTGRES_HOST,
        'PORT': POSTGRES_PORT,
    },
}

# Password validation
# https://docs.djangoproject.com/en/3.2/ref/settings/#auth-password-validators

AUTH_PASSWORD_VALIDATORS = [
    {
        'NAME': 'django.contrib.auth.password_validation.UserAttributeSimilarityValidator',
    },
    {
        'NAME': 'django.contrib.auth.password_validation.MinimumLengthValidator',
    },
    {
        'NAME': 'django.contrib.auth.password_validation.CommonPasswordValidator',
    },
    {
        'NAME': 'django.contrib.auth.password_validation.NumericPasswordValidator',
    },
]

# Internationalization
# https://docs.djangoproject.com/en/3.2/topics/i18n/

LANGUAGE_CODE = 'en-us'

TIME_ZONE = 'UTC'

USE_I18N = True

USE_L10N = True

USE_TZ = True

# Static files (CSS, JavaScript, Images)
# https://docs.djangoproject.com/en/3.2/howto/static-files/

STATIC_URL = '/static/'
STATIC_ROOT = os.path.join(BASE_DIR, "static")

# Default primary key field type
# https://docs.djangoproject.com/en/3.2/ref/settings/#default-auto-field

DEFAULT_AUTO_FIELD = 'django.db.models.BigAutoField'

REST_FRAMEWORK = {
    # Use Django's standard `django.contrib.auth` permissions,
    # or allow read-only access for unauthenticated users.
    'DEFAULT_PERMISSION_CLASSES': [
        'rest_framework.permissions.AllowAny'
    ],
    'DEFAULT_SCHEMA_CLASS': 'drf_spectacular.openapi.AutoSchema',

    'DEFAULT_AUTHENTICATION_CLASSES': (
        'rest_framework.authentication.BasicAuthentication',
        'rest_framework.authentication.SessionAuthentication',
        'rest_framework_simplejwt.authentication.JWTAuthentication',
    )

}

# Logging configuration

LOGGING = {
    'version': 1,
    'disable_existing_loggers': False,
    'formatters': {
        'verbose': {
            'format': '{asctime} {levelname} {filename} {funcName} {lineno} {message}',
            'style': '{',
        },
        'simple': {
            'format': '{asctime} {levelname} - {message}',
            'style': '{',
        },
    },
    'filters': {
        'require_debug_false': {
            '()': 'django.utils.log.RequireDebugFalse',
        },
        'require_debug_true': {
            '()': 'django.utils.log.RequireDebugTrue',
        },
    },
    'handlers': {
        'console': {
            'level': 'DEBUG',
            'class': 'logging.StreamHandler',
            'filters': ['require_debug_true'],
            'formatter': 'simple',
        },
        'log_file': {
            'level': 'DEBUG',
            'class': 'logging.handlers.RotatingFileHandler',
            'filename': 'api.log',
            'maxBytes': 1024 * 1024 * 5,  # 5 mb
            'backupCount': 5,
            'formatter': 'verbose',
        },
        'error_file': {
            'level': 'ERROR',
            'class': 'logging.handlers.RotatingFileHandler',
            'filename': 'api_error.log',
            'maxBytes': 1024 * 1024 * 5,  # 5 mb
            'backupCount': 5,
            'formatter': 'verbose',
        },
        'mail_admins': {
            'level': 'ERROR',
            'class': 'django.utils.log.AdminEmailHandler',
            'filters': ['require_debug_false'],
            'formatter': 'verbose',
        },
    },
    'loggers': {
        'ketab_api': {
            'handlers': ['console', 'log_file', 'error_file', 'mail_admins'],
            'level': 'DEBUG',
        },
        'django.request': {
            'handlers': ['mail_admins', 'error_file'],
            'level': 'ERROR',
            'propagate': False,
        },
    },
}

SPECTACULAR_SETTINGS = {
    'TITLE': 'Book',
    'DESCRIPTION': 'Documentation of API endpoints of Book project',
    'VERSION': '1.0.0',
    "SCHEMA_PATH_PREFIX": "/api/v1/",
    'COMPONENT_SPLIT_REQUEST': True
}

when I want to call this api via get :

/api/v1/account/users/

it gives me the bellow error :

ModuleNotFoundError at /api/v1/account/users/1/
No module named 'accounts'
Request Method: GET
Request URL:    http://127.0.0.1:8000/api/v1/account/users/1/
Django Version: 3.2.25
Exception Type: ModuleNotFoundError
Exception Value:    
No module named 'accounts'
Exception Location: <frozen importlib._bootstrap>, line 973, in _find_and_load_unlocked
Python Executable:  /usr/local/bin/python3
Python Version: 3.8.20
Python Path:    
['/opt/project',
 '/opt/project',
 '/opt/.pycharm_helpers/pycharm_display',
 '/usr/local/lib/python38.zip',
 '/usr/local/lib/python3.8',
 '/usr/local/lib/python3.8/lib-dynload',
 '/usr/local/lib/python3.8/site-packages',
 '/opt/.pycharm_helpers/pycharm_matplotlib_backend']
Server time:    Thu, 16 Jan 2025 05:29:15 +0000

and the TraceBack info is like this :

Environment:


Request Method: GET
Request URL: http://127.0.0.1:8000/api/v1/account/users/1/

Django Version: 3.2.25
Python Version: 3.8.20
Installed Applications:
['django.contrib.admin',
 'django.contrib.auth',
 'django.contrib.contenttypes',
 'django.contrib.sessions',
 'django.contrib.messages',
 'django.contrib.staticfiles',
 'drf_spectacular',
 'rest_framework',
 'django_filters',
 'api',
 'api.books',
 'api.accounts']
Installed Middleware:
['django.middleware.security.SecurityMiddleware',
 'django.contrib.sessions.middleware.SessionMiddleware',
 'django.middleware.common.CommonMiddleware',
 'django.middleware.csrf.CsrfViewMiddleware',
 'django.contrib.auth.middleware.AuthenticationMiddleware',
 'django.contrib.messages.middleware.MessageMiddleware',
 'django.middleware.clickjacking.XFrameOptionsMiddleware']



Traceback (most recent call last):
  File "/usr/local/lib/python3.8/site-packages/django/core/handlers/exception.py", line 47, in inner
    response = get_response(request)
  File "/usr/local/lib/python3.8/site-packages/django/core/handlers/base.py", line 181, in _get_response
    response = wrapped_callback(request, *callback_args, **callback_kwargs)
  File "/usr/local/lib/python3.8/site-packages/django/views/decorators/csrf.py", line 54, in wrapped_view
    return view_func(*args, **kwargs)
  File "/usr/local/lib/python3.8/site-packages/rest_framework/viewsets.py", line 125, in view
    return self.dispatch(request, *args, **kwargs)
  File "/usr/local/lib/python3.8/site-packages/rest_framework/views.py", line 509, in dispatch
    response = self.handle_exception(exc)
  File "/usr/local/lib/python3.8/site-packages/rest_framework/views.py", line 469, in handle_exception
    self.raise_uncaught_exception(exc)
  File "/usr/local/lib/python3.8/site-packages/rest_framework/views.py", line 480, in raise_uncaught_exception
    raise exc
  File "/usr/local/lib/python3.8/site-packages/rest_framework/views.py", line 506, in dispatch
    response = handler(request, *args, **kwargs)
  File "/usr/local/lib/python3.8/site-packages/rest_framework/mixins.py", line 55, in retrieve
    serializer = self.get_serializer(instance)
  File "/usr/local/lib/python3.8/site-packages/rest_framework/generics.py", line 108, in get_serializer
    serializer_class = self.get_serializer_class()
  File "/opt/project/api/util/ViewSetUtil.py", line 21, in get_serializer_class
    module = importlib.import_module(f"{current_model._meta.app_label}.serializers")
  File "/usr/local/lib/python3.8/importlib/__init__.py", line 127, in import_module
    return _bootstrap._gcd_import(name[level:], package, level)
  File "<frozen importlib._bootstrap>", line 1014, in _gcd_import
    <source code not available>
  File "<frozen importlib._bootstrap>", line 991, in _find_and_load
    <source code not available>
  File "<frozen importlib._bootstrap>", line 961, in _find_and_load_unlocked
    <source code not available>
  File "<frozen importlib._bootstrap>", line 219, in _call_with_frames_removed
    <source code not available>
  File "<frozen importlib._bootstrap>", line 1014, in _gcd_import
    <source code not available>
  File "<frozen importlib._bootstrap>", line 991, in _find_and_load
    <source code not available>
  File "<frozen importlib._bootstrap>", line 973, in _find_and_load_unlocked
    <source code not available>

Exception Type: ModuleNotFoundError at /api/v1/account/users/1/
Exception Value: No module named 'accounts'

is the problem due to this part :