有人能帮我解决这个问题吗?Access to XMLHttpRequest at 'http://localhost:8000/api/tickets' from origin 'http://localhost' has been blocked by CORS policy: No 'Access-Control-A
: (admin.E408)'django.contrib.auth.middleware.AuthenticationMiddleware' must be in MIDDLEWARE in order: (admin.E409) 'django.contrib.messages.middleware.MessageMiddleware' must be in MIDDLEWARE in order: (admin.E410) 'django.contrib.sessio
lib/python2.6/site-packages/django/core/handlers/base.py", line 188, in get_response File "/home/toursprung/.virtualenvs/myproject/lib/python2.6/site-packages/