bridge activation error: yaml: unmarshal errors:, line 7: field bonds not found in struct netplan

[Vidmantas Rinkevičius]

Hi,

During openstack deployment juju gives error on all lxd containers.

Example:

sudo juju status

3/lxd/0  down                     pending  bionic bridge activation 
error: yaml: unmarshal errors:
   line 7: field bonds not found in struct netplan.

yaml:

openstack-dashboard:
     annotations:
       gui-x: '500'
       gui-y: '-250'
     charm: cs:~openstack-charmers-next/bionic/openstack-dashboard
     num_units: 1
     bindings:
       website: web
     options:
       openstack-origin: distro-proposed
     to:
     - lxd:3


I am deploying 18.04 and I use network spaces.

Any ideas why this error occurs?