update config

todo/settings.py

@@ -47,13 +47,12 @@ INSTALLED_APPS = [
 MIDDLEWARE = [
     'django.middleware.security.SecurityMiddleware',
     'django.contrib.sessions.middleware.SessionMiddleware',
+    'corsheaders.middleware.CorsMiddleware',
     'django.middleware.common.CommonMiddleware',
     'django.middleware.csrf.CsrfViewMiddleware',
     'django.contrib.auth.middleware.AuthenticationMiddleware',
     'django.contrib.messages.middleware.MessageMiddleware',
     'django.middleware.clickjacking.XFrameOptionsMiddleware',
-    'corsheaders.middleware.CorsMiddleware',
-    'django.middleware.common.CommonMiddleware',
 ]
 
 CORS_ORIGIN_ALLOW_ALL = True