update middleware setting

project_name/settings.py

@@ -41,7 +41,7 @@ INSTALLED_APPS = [
     'django.contrib.staticfiles',
     'django.contrib.staticfiles',
 ]
 ]
 
 
-MIDDLEWARE_CLASSES = [
+MIDDLEWARE = [
     'django.middleware.security.SecurityMiddleware',
     'django.middleware.security.SecurityMiddleware',
     'whitenoise.middleware.WhiteNoiseMiddleware',
     'whitenoise.middleware.WhiteNoiseMiddleware',
     'django.contrib.sessions.middleware.SessionMiddleware',
     'django.contrib.sessions.middleware.SessionMiddleware',