try to fix cors

store_back/settings.py

@@ -57,8 +57,8 @@ INSTALLED_APPS = [
 MIDDLEWARE = [
     'django.middleware.security.SecurityMiddleware',
     'django.contrib.sessions.middleware.SessionMiddleware',
-    'django.middleware.common.CommonMiddleware',
     'corsheaders.middleware.CorsMiddleware',
+    'django.middleware.common.CommonMiddleware',
     # 'django.middleware.csrf.CsrfViewMiddleware',
     'django.contrib.auth.middleware.AuthenticationMiddleware',
     'django.contrib.messages.middleware.MessageMiddleware',