Charmed Openstack updates and deployments failing

Attempting to deploy Charmed Openstack “placement” for channel zed/stable results in the following error.

ERROR resolving with preferred channel: Post “”: dial tcp connect: no route to host

Also a number of charmed applications (e.g. barbican on zed/stable) simply show “hook failed - update-status” indicating that they cannot be updated. Please help me to resolve the problem.