我试着通过搜索来解决这个问题，但是没有找到任何解决方案。我试着从heroku-CLI将我的django应用程序部署到heroku，但是在运行'$ python manage.py collectstatic --noinput'时遇到了这个错误。

ModuleNotFoundError: No module named 'my_app.settings.local'; 'quiz_api.settings' is not a package
!Error while running '$ python manage.py collectstatic --noinput'.

此错误发生在settings.py被分为base.py、local.py和product.py之后，在此之前，完全没有问题。

root
my_project
 -my_app
  -settings
    __init___.py "in settings dir"
    base.py
    local.py
    production.py
  __init__.py "in my_app dir"
  wsgi.py
  etc...
.env
manage.py
etc...

base.py (BASE_DIR可能是问题所在）

from pathlib import Path
import os
import json

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




INSTALLED_APPS = [
    'django.contrib.admin',
    'django.contrib.auth',
    'django.contrib.contenttypes',
    'django.contrib.sessions',
    'django.contrib.messages',
    'django.contrib.staticfiles',
    'cloudinary_storage',
    'cloudinary',
    'my_app',

    'rest_framework',
    'django_filters',
    'debug_toolbar',
    'django_cleanup.apps.CleanupConfig',
    

    'djoser',
    'corsheaders'
]

REST_FRAMEWORK = {
    'DEFAULT_FILTER_BACKENDS': ['django_filters.rest_framework.DjangoFilterBackend'],
    'DATETIME_FORMAT': "%Y-%m-%d %H:%M",
    'DEFAULT_PAGINATION_CLASS': 'rest_framework.pagination.PageNumberPagination',
    'PAGE_SIZE':8,
}

MIDDLEWARE = [
    'django.middleware.security.SecurityMiddleware',
    'django.contrib.sessions.middleware.SessionMiddleware',
    'corsheaders.middleware.CorsMiddleware',

    'whitenoise.middleware.WhiteNoiseMiddleware',

    'django.middleware.common.CommonMiddleware',
    'django.middleware.csrf.CsrfViewMiddleware',
    'django.contrib.auth.middleware.AuthenticationMiddleware',
    'django.contrib.messages.middleware.MessageMiddleware',
    'django.middleware.clickjacking.XFrameOptionsMiddleware',
    'debug_toolbar.middleware.DebugToolbarMiddleware',
]
STATICFILES_STORAGE = 'whitenoise.storage.CompressedManifestStaticFilesStorage'

INTERNAL_IPS = ['127.0.0.1']

ROOT_URLCONF = 'quiz_api.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_api.wsgi.application'

CORS_ALLOW_CREDENTIALS = True

import dj_database_url
MAX_CONN_AGE = 600

DATABASES = {
    "default": {
        "ENGINE": "django.db.backends.sqlite3",
        "NAME": os.path.join(BASE_DIR, "db.sqlite3")
    }
}

if "DATABASE_URL" in os.environ:
    # Configure Django for DATABASE_URL environment variable.
    DATABASES["default"] = dj_database_url.config(
        conn_max_age=MAX_CONN_AGE, ssl_require=True)

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',
    },
]

LANGUAGE_CODE = 'en-us'

TIME_ZONE = 'UTC'

USE_I18N = True

USE_L10N = True

USE_TZ = True

STATICFILES_DIRS = (
    os.path.join(BASE_DIR, 'media'),
)
STATIC_ROOT = os.path.join(BASE_DIR, 'staticfiles')
STATIC_URL = '/static/'
MEDIA_URL = '/media/'
MEDIA_ROOT = BASE_DIR , 'media/'

DEFAULT_AUTO_FIELD = 'django.db.models.BigAutoField'

manage.py

import os
import sys

def main():
    """Run administrative tasks."""
    os.environ.setdefault('DJANGO_SETTINGS_MODULE', 'my_app.settings.local')
    try:
        from django.core.management import execute_from_command_line
    except ImportError as exc:
        raise ImportError(
            "Couldn't import Django. Are you sure it's installed and "
            "available on your PYTHONPATH environment variable? Did you "
            "forget to activate a virtual environment?"
        ) from exc
    execute_from_command_line(sys.argv)

if __name__ == '__main__':
    main()

wsgi.py

import os

from django.core.wsgi import get_wsgi_application

os.environ.setdefault('DJANGO_SETTINGS_MODULE', 'my_app.settings')

application = get_wsgi_application()

我认为问题是my_app或设置没有被视为模块，甚至包括init.py文件，所以我在本地环境中测试，然后工作正常，没有任何问题。（在这种情况下，local.py被读取）
此外，我在配置变量中设置了DJANGO_SETTINGS_MODULE = my_app.settings.production（也尝试了my_app、my_app.settings），但仍然返回了一个错误，只是消息不同，如“my_app.settings. production”;'quiz_api.settings'不是一个软件包。所以我锁定的问题是，我的应用程序在运行'$ python manage.py collectstatic --noinput'时没有被视为模块。
请提出建议。