AppRegistryNotReady

При запуске py manage.py runserver все работает без ошибок. Возникла потребность протестировать на сервере heroku. При загрузке на heroku возникает Application error.

В heroku logs появляется ошибка:

raise AppRegistryNotReady("Apps aren't loaded yet.")
django.core.exceptions.AppRegistryNotReady: Apps aren't loaded yet.

При запуске django-admin check:

raise ImproperlyConfigured(
django.core.exceptions.ImproperlyConfigured: Requested setting LANGUAGE_CODE, but settings are not configured. You must
either define the environment variable DJANGO_SETTINGS_MODULE or call settings.configure() before accessing settings.

Файл asgi.py:

import os

from django.core.asgi import get_asgi_application

from channels.routing import ProtocolTypeRouter, URLRouter
from channels.auth import AuthMiddlewareStack

from quiz_app.routing import ws_urlpatterns

os.environ.setdefault('DJANGO_SETTINGS_MODULE', 'Quiz.settings')
django.setup()
application = ProtocolTypeRouter({
    'http': get_asgi_application(),
    'websocket': AuthMiddlewareStack(
        URLRouter(
            ws_urlpatterns
        )
    ),
})

Файл settings.py:

"""
Django settings for Quiz project.

Generated by 'django-admin startproject' using Django 3.2.7.

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 os

import dj_database_url

from django.conf import settings

BASE_DIR = os.path.dirname(os.path.dirname(os.path.abspath(__file__)))

# SECURITY WARNING: keep the secret key used in production secret!
SECRET_KEY = '*'

# SECURITY WARNING: don't run with debug turned on in production!
DEBUG = True

ALLOWED_HOSTS = ['*']

# Application definition
INSTALLED_APPS = [
    'django.contrib.admin',
    'django.contrib.auth',
    'django.contrib.contenttypes',
    'django.contrib.sessions',
    'django.contrib.messages',
    'django.contrib.staticfiles',
    'main_app',
    'quiz_app',
    'channels'
]

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',
    'whitenoise.middleware.WhiteNoiseMiddleware',
]

ROOT_URLCONF = 'Quiz.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 = 'Quiz.wsgi.application'
ASGI_APPLICATION = 'Quiz.asgi.application'

# Database
DATABASES = {
    'default': dj_database_url.config()
}
prod_db = dj_database_url.config(conn_max_age=500)
DATABASES['default'].update(prod_db)

# Channel_layers

CHANNEL_LAYERS = {
    'default': {
        'BACKEND': 'channels_redis.core.RedisChannelLayer',
        'CONFIG': {
            "hosts": [os.environ.get('REDIS_URL', 'redis://localhost:6379')],
        },
    },
}

# Password validation
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
LANGUAGE_CODE = 'en-us'

TIME_ZONE = 'UTC'

USE_I18N = True

USE_L10N = True

USE_TZ = True


# Static files (CSS, JavaScript, Images)
STATIC_URL = '/static/'
STATIC_ROOT = os.path.join(BASE_DIR, 'staticfiles')
STATICFILES_DIRS = [os.path.join(BASE_DIR, 'static')]

MEDIA_URL = '/media/'
MEDIA_ROOT = os.path.join(BASE_DIR, 'media')

STATICFILES_STORAGE = 'whitenoise.storage.CompressedManifestStaticFilesStorage'

# Default primary key field type
DEFAULT_AUTO_FIELD = 'django.db.models.BigAutoField'

Структура проекта:

Спасибо)

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