openstack@plwdevstack:/opt/stack/python-openstackclient$ curl -H "X-Auth-Token:70bca2ce0c3b442899c1e60d9c468163" http://localhost:5000/v2.0/tenants
{"error": {"message": "An unexpected error prevented the server from fulfilling your request. 'user'", "code": 500, "title": "Internal Server Error"}}