When I tried to run my python program, I encountered this Django import error

Question

When I tried running a python program on my local machine, I encountered this error:

Performing system checks...

System check identified no issues (0 silenced).

You have 2 unapplied migration(s). Your project may not work properly until you apply the migrations for app(s): auth.
Run 'python manage.py migrate' to apply them.
April 29, 2019 - 19:29:41
Django version 2.2, using settings 'mysite.settings'
Starting development server at http://127.0.0.1:8000/
Quit the server with CTRL-BREAK.
Exception in thread Thread-1:
Traceback (most recent call last):
  File "C:\Users\AppData\Local\Programs\Python\Python37\lib\site-packages\django\core\servers\basehttp.py", line 45, in get_internal_wsgi_application
    return import_string(app_path)
  File "C:\Users\AppData\Local\Programs\Python\Python37\lib\site-packages\django\utils\module_loading.py", line 17, in import_string
    module = import_module(module_path)
  File "C:\Users\AppData\Local\Programs\Python\Python37\lib\importlib\__init__.py", line 127, in import_module
    return _bootstrap._gcd_import(name[level:], package, level)
  File "<frozen importlib._bootstrap>", line 1006, in _gcd_import
  File "<frozen importlib._bootstrap>", line 983, in _find_and_load
  File "<frozen importlib._bootstrap>", line 967, in _find_and_load_unlocked
  File "<frozen importlib._bootstrap>", line 677, in _load_unlocked
  File "<frozen importlib._bootstrap_external>", line 728, in exec_module
  File "<frozen importlib._bootstrap>", line 219, in _call_with_frames_removed
  File "C:\Users\Desktop\Intern\Diversity_Policy_Site\mysite\wsgi.py", line 12, in <module>
    from whitenoise.django import DjangoWhiteNoise
  File "C:\Users\AppData\Local\Programs\Python\Python37\lib\site-packages\whitenoise\django.py", line 2, in <module>
    '\n\n'
ImportError:

Your WhiteNoise configuration is incompatible with WhiteNoise v4.0
This can be fixed by following the upgrade instructions at:
http://whitenoise.evans.io/en/stable/changelog.html#v4-0



The above exception was the direct cause of the following exception:

Traceback (most recent call last):
  File "C:\Users\AppData\Local\Programs\Python\Python37\lib\threading.py", line 917, in _bootstrap_inner
    self.run()
  File "C:\Users\AppData\Local\Programs\Python\Python37\lib\threading.py", line 865, in run
    self._target(*self._args, **self._kwargs)
  File "C:\Users\AppData\Local\Programs\Python\Python37\lib\site-packages\django\utils\autoreload.py", line 54, in wrapper
    fn(*args, **kwargs)
  File "C:\Users\AppData\Local\Programs\Python\Python37\lib\site-packages\django\core\management\commands\runserver.py", line 137, in inner_run
    handler = self.get_handler(*args, **options)
  File "C:\Users\AppData\Local\Programs\Python\Python37\lib\site-packages\django\contrib\staticfiles\management\commands\runserver.py", line 27, in get_handler
    handler = super().get_handler(*args, **options)
  File "C:\Users\AppData\Local\Programs\Python\Python37\lib\site-packages\django\core\management\commands\runserver.py", line 64, in get_handler
    return get_internal_wsgi_application()
  File "C:\Users\AppData\Local\Programs\Python\Python37\lib\site-packages\django\core\servers\basehttp.py", line 50, in get_internal_wsgi_application
    ) from err
django.core.exceptions.ImproperlyConfigured: WSGI application 'mysite.wsgi.application' could not be loaded; Error importing module.

I tried the suggested link in the error message, but it didn't work out.

Here are the versions:

Brotli==1.0.7
certifi==2019.3.9
dj-database-url==0.5.0
Django==2.2
django-heroku==0.3.1
elasticsearch==7.0.0
elasticsearch-dsl==7.0.0
gunicorn==19.9.0
psycopg2==2.8.2
python-dateutil==2.8.0
pytz==2019.1
six==1.12.0
sqlparse==0.3.0
urllib3==1.25.1
whitenoise==4.1.2

I have also asked a similar question today, but I still can't solve this problem, and I have tried looking at the solution from other posts, and they are not very helpful.

Here is the content of my setting.py

"""
Django settings for mysite project.

Generated by 'django-admin startproject' using Django 2.0.7.

For more information on this file, see
https://docs.djangoproject.com/en/2.0/topics/settings/

For the full list of settings and their values, see
https://docs.djangoproject.com/en/2.0/ref/settings/
"""

import os
import django_heroku 
import dj_database_url

config = dj_database_url.config

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


# Quick-start development settings - unsuitable for production
# See https://docs.djangoproject.com/en/2.0/howto/deployment/checklist/

# SECURITY WARNING: keep the secret key used in production secret!
DEBUG = False

# Experimenting here
ALLOWED_HOSTS = ["localhost"]

# Application definition

INSTALLED_APPS = [
    'django.contrib.admin',
    'django.contrib.auth',
    'django.contrib.contenttypes',
    'django.contrib.sessions',
    'django.contrib.messages',
    'django.contrib.staticfiles',
    'blog',
]

MIDDLEWARE = [
    'django.middleware.security.SecurityMiddleware',
    'whitenoise.middleware.WhiteNoiseMiddleware',
    '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 = 'mysite.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 = 'mysite.wsgi.application'

# WSGI_APPLICATION = 'mysite.wsgi.application'
# from django.core.exceptions import ImproperlyConfigured
 
# def get_env_variable(var_name):
#     try:
#         return os.environ[var_name]
#     except KeyError:
#         error_msg = "Set the %s environment variable" % var_name
#         raise ImproperlyConfigured(error_msg)

# Database
# https://docs.djangoproject.com/en/2.0/ref/settings/#databases

# one for development (maybe move that to local postgres) and another for running and development
DATABASES = {
    'default': {
            'ENGINE': 'django.db.backends.sqlite3',
            'NAME': 'mydatabase',
        }
}



# Password validation
# https://docs.djangoproject.com/en/2.0/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/2.0/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/2.0/howto/static-files/

#STATIC_URL = './blog/staticfiles/'
STATIC_URL = '/static/'

# STATICFILES_DIRS = (
#     #'/Diversity_Policy_Site/blog/static',
#     os.path.join(BASE_DIR, '/static/'),
# )
STATIC_ROOT = os.path.join(BASE_DIR, 'static')

STATICFILES_STORAGE = 'whitenoise.django.GzipManifestStaticFilesStorage'

django_heroku.settings(locals())

Any help or suggestion is appreciated.

Answer 1

Ok, I finally found the solution online: frist do: python manage.py migrate then do: pip uninstall whitenoise then do: pip install "whitenoise<4"

Also, appreciate everyone who posted suggestion on this post.

Answer 2

maybe you can change the WSGI_APPLICATION = 'mysite.wsgi.application' to WSGI_APPLICATION = 'wsgi.application'