Django E.408, E.409 et E.410 erreurs sur runserver

Question

J'installe un nouveau projet Django utilisant virtualenv, le tout de manière normale. Ma version de Python est 3.7.3 et Django est 2.2.3.

Si je fais python manage.py runserver, j'obtiens les erreurs suivantes:

?: (admin.E408)'Django.contrib.auth.middleware.AuthenticationMiddleware' must be in MIDDLEWARE in order to use the admin application.
?: (admin.E409) 'Django.contrib.messages.middleware.MessageMiddleware' must be in MIDDLEWARE in order to use the admin application.
?: (admin.E410) 'Django.contrib.sessions.middleware.SessionMiddleware' must be in MIDDLEWARE in order to use the admin application.

Voici mon settings.py, et vous pouvez voir que ces middleware sont là.

"""
Django settings for fcc_new project.

Generated by 'Django-admin startproject' using Django 1.9.4.

For more information on this file, see
https://docs.djangoproject.com/en/1.9/topics/settings/

For the full list of settings and their values, see
https://docs.djangoproject.com/en/1.9/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__)))


# Quick-start development settings - unsuitable for production
# See https://docs.djangoproject.com/en/1.9/howto/deployment/checklist/

# SECURITY WARNING: keep the secret key used in production secret!
SECRET_KEY = MY KEY goes here

# 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',
]

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

ROOT_URLCONF = 'fcc_new.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 = 'fcc_new.wsgi.application'


# Database
# https://docs.djangoproject.com/en/1.9/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/1.9/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/1.9/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/1.9/howto/static-files/

STATIC_URL = '/static/'

J'ai essayé de réinstaller, de vérifier les versions et de remplacer "MIDDLEWARE_CLASSES" par "MIDDLEWARE". Rien ne marche. Quelqu'un peut-il identifier le problème?

Answer 1

Modifiez setting.py comme le montre la photo Modifiez setting.py

# MIDDLEWARE_CLASSES = [
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.auth.middleware.SessionAuthenticationMiddleware',
    'Django.contrib.messages.middleware.MessageMiddleware',
    'Django.middleware.clickjacking.XFrameOptionsMiddleware',
]

Voir aussi: De CSDN