部署密钥报错

[phildman]

Internal Server Error: /ansible/test/deploykey
Traceback (most recent call last):
File "/home/ansible/envansible/lib/python2.7/site-packages/django/core/handlers/base.py", line 114, in get_response
response = wrapped_callback(request, _callback_args, *_callback_kwargs)
File "/home/ansible/ansible_ui/desktop/apps/ansible/views.py", line 777, in deploykey
hostlist = get_hosts(inventory, hosts)
File "/home/ansible/ansible_ui/desktop/apps/ansible/tasks.py", line 319, in get_hosts
inventory = Inventory(hostfile)
TypeError: init() takes at least 3 arguments (2 given)
请问这是怎么回事