snappy versions print error

[Pillar Zuo]

Hi
    I have ported snappy to pcDuino V3,but when do "snappy versions" order.it print
root at localhost:~# snappy versions 
WARNING: failed to connect to dbus: org.freedesktop.DBus.Error.FileNotFound: Failed to connect to socket /var/run/dbus/system_bus_socket: No such file or directory 
Traceback (most recent call last): 
File "/usr/bin/snappy", line 25, in <module> 
status = Main().__main__() 
File "/usr/lib/python3/dist-packages/snappy/main.py", line 195, in __main__ 
return callback(args) 
File "/usr/lib/python3/dist-packages/snappy/main.py", line 335, in _do_versions 
click_versions = ClickDataSource().versions(all) 
File "/usr/lib/python3/dist-packages/snappy/click.py", line 189, in versions 
all_updates_list = repo.get_upgradable() 
File "/usr/lib/python3/dist-packages/click/repository.py", line 183, in get_upgradable 
headers={"content-type": "application/json"}) 
File "/usr/lib/python3/dist-packages/click/network.py", line 70, in http_request 
curl.perform() 
pycurl.error: (60, 'server certificate verification failed. CAfile: /etc/ssl/certs/ca-certificates.crt CRLfile: none') 
root at localhost:~#

and I cannt do "snappy update" "snappy install xxxxx",
is enyone who knows what happened?

Best Regards
Pillar
LinkSprite Technologies, Inc.
Voice: 86-18971197460 （China）
skype: pillar_zuo / QQ:471044839
Website:www.pcduino.com
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