blockade up can't create the cluster?

[GinobiLi]

when I use blockade up command ， but nothing happen，none of the error info and the status of containers ,my system is ubuntu 16.04 and with docker-engine 1.12 installed.

[GinobiLi]

blockade status

Unexpected error! This may be a Blockade bug.

Traceback (most recent call last):
File "/home/lxp/.local/lib/python2.7/site-packages/blockade/cli.py", line 385, in main
opts.func(opts)
File "/home/lxp/.local/lib/python2.7/site-packages/blockade/cli.py", line 153, in cmd_status
containers = b.status()
File "/home/lxp/.local/lib/python2.7/site-packages/blockade/core.py", line 298, in status
return self._get_all_containers()
File "/home/lxp/.local/lib/python2.7/site-packages/blockade/core.py", line 288, in _get_all_containers
ip_partitions = self.network.get_ip_partitions(self.state.blockade_id)
File "/home/lxp/.local/lib/python2.7/site-packages/blockade/net.py", line 66, in get_ip_partitions
return iptables_get_source_chains(blockade_id)
File "/home/lxp/.local/lib/python2.7/site-packages/blockade/net.py", line 145, in iptables_get_source_chains
lines = iptables_get_chain_rules("FORWARD")
File "/home/lxp/.local/lib/python2.7/site-packages/blockade/net.py", line 124, in iptables_get_chain_rules
lines = iptables_call_output("-L", chain)
File "/home/lxp/.local/lib/python2.7/site-packages/blockade/net.py", line 112, in iptables_call_output
output = docker_run(' '.join(cmd), image=IPTABLES_DOCKER_IMAGE)
File "/home/lxp/.local/lib/python2.7/site-packages/blockade/utils.py", line 33, in docker_run
container = docker_client.create_container(image=image, command=command)
File "/home/lxp/.local/lib/python2.7/site-packages/docker/api/container.py", line 117, in create_container
return self.create_container_from_config(config, name)
File "/home/lxp/.local/lib/python2.7/site-packages/docker/api/container.py", line 127, in create_container_from_config
res = self._post_json(u, data=config, params=params)
File "/home/lxp/.local/lib/python2.7/site-packages/docker/client.py", line 166, in _post_json
return self._post(url, data=json.dumps(data2), *_kwargs)
File "/home/lxp/.local/lib/python2.7/site-packages/docker/client.py", line 107, in _post
return self.post(url, *_self._set_request_timeout(kwargs))
File "/home/lxp/.local/lib/python2.7/site-packages/requests/sessions.py", line 522, in post
return self.request('POST', url, data=data, json=json, *_kwargs)
File "/home/lxp/.local/lib/python2.7/site-packages/requests/sessions.py", line 475, in request
resp = self.send(prep, *_send_kwargs)
File "/home/lxp/.local/lib/python2.7/site-packages/requests/sessions.py", line 596, in send
r = adapter.send(request, **kwargs)
File "/home/lxp/.local/lib/python2.7/site-packages/requests/adapters.py", line 473, in send
raise ConnectionError(err, request=request)
ConnectionError: ('Connection aborted.', error(13, 'Permission denied'))