Hi, most likely it is caused by using wrong version of the core library package. Some parts of it are written in Python rather than in MuranoPL and located inside murano source codes. So if you use newer version of core library with older version of Murano you get this error. In particular it cannot find https://github.com/openstack/murano/blob/stable/mitaka/murano/engine/system/net_explorer.py#L195 method which is available since mitaka. Sincerely yours, Stan Lagun Principal Software Engineer @ Mirantis <slagun at mirantis.com> On Wed, Aug 24, 2016 at 4:37 AM, Kirill Zaitsev <kzaitsev at mirantis.com> wrote: > Hi, it’s impossible to say without knowing what application you’re trying > to deploy. Also this mailing list is not the best place for usage questions > =) Please come to our IRC channel #murano — we would try to help you find > what went wrong. > > -- > Kirill Zaitsev > Murano Project Tech Lead > Software Engineer at > Mirantis, Inc > > On 24 août 2016 at 05:57:32, wuhan (wuhan9087 at 163.com) wrote: > > listNeutronExtensions > > > __________________________________________________________________________ > OpenStack Development Mailing List (not for usage questions) > Unsubscribe: OpenStack-dev-request at lists.openstack.org?subject:unsubscribe > http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack-dev > > -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.openstack.org/pipermail/openstack-dev/attachments/20160824/92e58936/attachment.html>