vitrage-ml run error

[Qitao]

Vitrage report error as follows when adding config plugins = jaccard_correlation

Dec 18 10:40:19 qihongtao vitrage-ml[6174]: Traceback (most recent call last):
Dec 18 10:40:19 qihongtao vitrage-ml[6174]: File "/usr/lib/python3.6/multiprocessing/process.py", line 258, in _bootstrap
Dec 18 10:40:19 qihongtao vitrage-ml[6174]: self.run()
Dec 18 10:40:19 qihongtao vitrage-ml[6174]: File "/usr/lib/python3.6/multiprocessing/process.py", line 93, in run Dec 18 10:40:19 qihongtao vitrage-ml[6174]: self._target(*self._args, **self._kwargs)
Dec 18 10:40:19 qihongtao vitrage-ml[6174]: File "/usr/local/lib/python3.6/dist-packages/cotyledon/_utils.py", line 63, in _bootstrap_process
Dec 18 10:40:19 qihongtao vitrage-ml[6174]: target(*args, **kwargs)
Dec 18 10:40:19 qihongtao vitrage-ml[6174]: File "/usr/local/lib/python3.6/dist-packages/cotyledon/_service.py", line 161, in create_and_wait
Dec 18 10:40:19 qihongtao vitrage-ml[6174]: sw = cls(*args, **kwargs)
Dec 18 10:40:19 qihongtao vitrage-ml[6174]: File "/usr/local/lib/python3.6/dist-packages/cotyledon/_service.py", line 175, in __init__
Dec 18 10:40:19 qihongtao vitrage-ml[6174]: self.service = config.service(worker_id, *args, **kwargs)
Dec 18 10:40:19 qihongtao vitrage-ml[6174]: File "/opt/stack/vitrage/vitrage/machine_learning/service.py", line 32, in __init__
Dec 18 10:40:19 qihongtao vitrage-ml[6174]: self.machine_learning_plugins = self.get_machine_learning_plugins() Dec 18 10:40:19 qihongtao vitrage-ml[6174]: File "/opt/stack/vitrage/vitrage/machine_learning/service.py", line 75, in get_machine_learning_plugins
Dec 18 10:40:19 qihongtao vitrage-ml[6174]: CONF))
Dec 18 10:40:19 qihongtao vitrage-ml[6174]: File "/usr/local/lib/python3.6/dist-packages/oslo_utils/importutils.py", line 44, in import_object
Dec 18 10:40:19 qihongtao vitrage-ml[6174]: return import_class(import_str)(*args, **kwargs)
Dec 18 10:40:19 qihongtao vitrage-ml[6174]: TypeError: __init__() takes 1 positional argument but 2 were given
Dec 18 10:40:19 qihongtao vitrage-ml[6174]: INFO cotyledon._service_manager [-] Child 6217 exited with status 1
Dec 18 10:40:19 qihongtao vitrage-ml[6174]: INFO cotyledon._service_manager [-] Forking too fast, sleeping