dashをdjangoで利用しようとした際にエラー「ValueError: Empty module name」となる

Question

前提

下記サイトを参考にしてdashをdjangoで動かそうとしているのですが、
「python manage.py migrate」を実行する際にエラーとなり、うまくいきません。

■参考サイト
https://akatak.hatenadiary.jp/entry/2020/07/25/161326

実現したいこと

・dashをdjangoで起動する
・上記djangoアプリをIISで起動する(予定)

発生している問題・エラーメッセージ

C:\python\djangomap\worldmap\worldmap.py:2: UserWarning:


The dash_table package is deprecated. Please replace
`import dash_table` with `from dash import dash_table`

Also, if you're using any of the table format helpers (e.g. Group), replace
`from dash_table.Format import Group` with
`from dash.dash_table.Format import Group`

C:\python\djangomap\worldmap\worldmap.py:3: UserWarning:


The dash_core_components package is deprecated. Please replace
`import dash_core_components as dcc` with `from dash import dcc`

C:\python\djangomap\worldmap\worldmap.py:4: UserWarning:


The dash_html_components package is deprecated. Please replace
`import dash_html_components as html` with `from dash import html`

Traceback (most recent call last):
  File "C:\Users\dadab\AppData\Local\Programs\Python\Python38\lib\site-packages\django_plotly_dash\finders.py", line 66, in __init__
    module = importlib.import_module(module_name)
  File "C:\Users\dadab\AppData\Local\Programs\Python\Python38\lib\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
  File "<frozen importlib._bootstrap>", line 991, in _find_and_load
  File "<frozen importlib._bootstrap>", line 973, in _find_and_load_unlocked
ModuleNotFoundError: No module named 'dash_renderer'

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "manage.py", line 21, in <module>
    main()
  File "manage.py", line 17, in main
    execute_from_command_line(sys.argv)
  File "C:\Users\dadab\AppData\Local\Programs\Python\Python38\lib\site-packages\django\core\management\__init__.py", line 419, in execute_from_command_line
    utility.execute()
  File "C:\Users\dadab\AppData\Local\Programs\Python\Python38\lib\site-packages\django\core\management\__init__.py", line 413, in execute
    self.fetch_command(subcommand).run_from_argv(self.argv)
  File "C:\Users\dadab\AppData\Local\Programs\Python\Python38\lib\site-packages\django\core\management\base.py", line 354, in run_from_argv
    self.execute(*args, **cmd_options)
  File "C:\Users\dadab\AppData\Local\Programs\Python\Python38\lib\site-packages\django\core\management\base.py", line 398, in execute
    output = self.handle(*args, **options)
  File "C:\Users\dadab\AppData\Local\Programs\Python\Python38\lib\site-packages\django\core\management\base.py", line 89, in wrapped
    res = handle_func(*args, **kwargs)
  File "C:\Users\dadab\AppData\Local\Programs\Python\Python38\lib\site-packages\django\core\management\commands\migrate.py", line 75, in handle
    self.check(databases=[database])
  File "C:\Users\dadab\AppData\Local\Programs\Python\Python38\lib\site-packages\django\core\management\base.py", line 419, in check
    all_issues = checks.run_checks(
  File "C:\Users\dadab\AppData\Local\Programs\Python\Python38\lib\site-packages\django\core\checks\registry.py", line 76, in run_checks
    new_errors = check(app_configs=app_configs, databases=databases)
  File "C:\Users\dadab\AppData\Local\Programs\Python\Python38\lib\site-packages\django\contrib\staticfiles\checks.py", line 7, in check_finders
    for finder in get_finders():
  File "C:\Users\dadab\AppData\Local\Programs\Python\Python38\lib\site-packages\django\contrib\staticfiles\finders.py", line 281, in get_finders
    yield get_finder(finder_path)
  File "C:\Users\dadab\AppData\Local\Programs\Python\Python38\lib\site-packages\django\contrib\staticfiles\finders.py", line 294, in get_finder
    return Finder()
  File "C:\Users\dadab\AppData\Local\Programs\Python\Python38\lib\site-packages\django_plotly_dash\finders.py", line 70, in __init__
    module = importlib.import_module(module_name)
  File "C:\Users\dadab\AppData\Local\Programs\Python\Python38\lib\importlib\__init__.py", line 127, in import_module
    return _bootstrap._gcd_import(name[level:], package, level)
  File "<frozen importlib._bootstrap>", line 1011, in _gcd_import
  File "<frozen importlib._bootstrap>", line 950, in _sanity_check
ValueError: Empty module name

該当のソースコード

"""
Django settings for djangomap project.

Generated by 'django-admin startproject' using Django 3.0.8.

For more information on this file, see
https://docs.djangoproject.com/en/3.0/topics/settings/

For the full list of settings and their values, see
https://docs.djangoproject.com/en/3.0/ref/settings/
"""

import os

# Build paths inside the project like this: os.path.join(BASE_DIR, ...)
BASE_DIR = os.path.dirname(os.path.dirname(os.path.abspath(__file__)))
TEMPLATE_DIR = os.path.join(BASE_DIR,'templates')

# Quick-start development settings - unsuitable for production
# See https://docs.djangoproject.com/en/3.0/howto/deployment/checklist/

# SECURITY WARNING: keep the secret key used in production secret!
SECRET_KEY = 'your-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',
    'django_plotly_dash.apps.DjangoPlotlyDashConfig',
    'channels',
    'channels_redis',
    'bootstrap4',
    'worldmap.apps.WorldmapConfig',
]

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 = 'djangomap.urls'

TEMPLATES = [
    {
        'BACKEND': 'django.template.backends.django.DjangoTemplates',
        'DIRS': [TEMPLATE_DIR],
        '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 = 'djangomap.wsgi.application'


# Database
# https://docs.djangoproject.com/en/3.0/ref/settings/#databases

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


# Password validation
# https://docs.djangoproject.com/en/3.0/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/3.0/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/3.0/howto/static-files/

STATIC_URL = '/static/'


### django_plotly_dashにて追加（ここから） ###

ASGI_APPLICATION = 'djangomap.routing.application' 

CHANNEL_LAYERS = {
    'default':{
        'BACKEND': 'channels_redis.core.RedisChannelLayer',
        'CONFIG': {
            'hosts':[('127.0.0.1', 6379),],
        }
    }
}

STATICFILES_FINDERS = [
    'django.contrib.staticfiles.finders.FileSystemFinder',
    'django.contrib.staticfiles.finders.AppDirectoriesFinder',
    'django_plotly_dash.finders.DashAssetFinder',
    'django_plotly_dash.finders.DashComponentFinder',
]

PLOTLY_COMPONENTS = [
    'dash_core_components',
    'dash_html_components',
    'dash_renderer',
    'dpd_components',
    'dpd_static_support',
    'dash_bootstrap_components',
]

X_FRAME_OPTIONS = 'SAMEORIGIN'

### django_plotly_dashにて追加（ここまで） ###

試したこと

「settings.py」の内容に不備がある可能性があると調べたら出てきたのでソースを確認しましたが、おかしいところが見当たりませんでした。

補足情報（FW/ツールのバージョンなど）

Python 3.8.7
Django 3.2.16
django-bootstrap4 22.2
django-plotly-dash 2.1.3
dash 2.6.2
dash-bootstrap-components 1.2.1
dash-core-components 2.0.0
dash-html-components 2.0.0

ここにより詳細な情報を記載してください。

Answer 1

値のエラー: モジュールの名前が空であり、名前空間上で参照できない。

Comments

[dadabitti3271]

ご教示いただきありがとうございます。
モジュールの値が空とあるのですが、そのような箇所が見当たらない状態です。