下载了最新的ansible塔，即ansible-tower-setup-3.3.1-1 . 但在安装过程中出现以下错误 .

sh ./setup.sh

Traceback (most recent call last):
  File "/usr/bin/ansible-playbook", line 324, in <module>
    sys.exit(main(sys.argv[1:]))
  File "/usr/bin/ansible-playbook", line 210, in main
    force_handlers=options.force_handlers,
  File "/usr/lib/python2.7/site-packages/ansible/playbook/__init__.py", line 181, in __init__
    ansible.callbacks.load_callback_plugins()
  File "/usr/lib/python2.7/site-packages/ansible/callbacks.py", line 51, in load_callback_plugins
    callback_plugins = [x for x in utils.plugins.callback_loader.all()]
  File "/usr/lib/python2.7/site-packages/ansible/utils/plugins.py", line 233, in all
    yield getattr(self._module_cache[path], self.class_name)(*args, **kwargs)
AttributeError: 'module' object has no attribute 'CallbackModule'
[error] Oops!  An error occured while running setup.
[warn] /var/log/tower does not exist.

怎么解决这个？是否有更好的开源工具类似于ansible塔？

ansible ansible-tower