openstack创建实例化网络第一步出现这个Invalid values_specs true，是什么问题

DEBUG: stevedore.extension found extension EntryPoint.parse('shell = cliff.formatters.shell:ShellFormatter')
DEBUG: stevedore.extension found extension EntryPoint.parse('value = cliff.formatters.value:ValueFormatter')
DEBUG: neutronclient.neutron.v2_0.network.CreateNetwork get_data(Namespace(admin_state=True, columns=[], formatter='table', max_width=0, name=u'ext-net', prefix='', provider:network_type=u'flat', provider:physical_network=u'external', provider:segmentation_id=None, request_format='json', router:external=True, shared=True, tenant_id=None, variables=[]))
DEBUG: keystoneclient.auth.identity.v2 Making authentication request to http://127.0.0.1:5000/v2.0/tokens
ERROR: neutronclient.shell Invalid values_specs True
Traceback (most recent call last):
  File "/usr/lib/python2.7/dist-packages/neutronclient/shell.py", line 731, in run_subcommand
    return run_command(cmd, cmd_parser, sub_argv)
  File "/usr/lib/python2.7/dist-packages/neutronclient/shell.py", line 97, in run_command
    return cmd.run(known_args)
  File "/usr/lib/python2.7/dist-packages/neutronclient/common/command.py", line 29, in run
    return super(OpenStackCommand, self).run(parsed_args)
  File "/usr/lib/python2.7/dist-packages/cliff/display.py", line 91, in run
    column_names, data = self.take_action(parsed_args)
  File "/usr/lib/python2.7/dist-packages/neutronclient/common/command.py", line 35, in take_action
    return self.get_data(parsed_args)
  File "/usr/lib/python2.7/dist-packages/neutronclient/neutron/v2_0/__init__.py", line 465, in get_data
    _extra_values = parse_args_to_dict(self.values_specs)
  File "/usr/lib/python2.7/dist-packages/neutronclient/neutron/v2_0/__init__.py", line 288, in parse_args_to_dict
    _("Invalid values_specs %s") % ' '.join(values_specs))
CommandError: Invalid values_specs True
Invalid values_specs True

请求token的时候产生的问题
DEBUG: keystoneclient.auth.identity.v2 Making authentication request to http://127.0.0.1:5000/v2.0/tokens
ERROR: neutronclient.shell Invalid values_specs True