Openstack Ansible Pike - Cannot Create Image in Horizon

There is a bug with OpenStack Pike deployments using Ansible. When you attempt to create an image in Horizon, you will see the following error:

Followed by this entry in the images list after closing this:

You should still be able to create images via command line, but Horizon won't work. 

There is a bug filed for this:

https://bugs.launchpad.net/openstack-ansible/+bug/1730722

Their fix is simple: connect to the horizon container from an infrastructure node:

lxc-attach -n `lxc-ls -1 | grep horizon | tail -1`

edit /etc/horizon/local_settings.py

and change:

HORIZON_IMAGES_UPLOAD_MODE = 'direct'

to

HORIZON_IMAGES_UPLOAD_MODE = 'remote'

After that, restart the horizon container

lxc-stop -n `lxc-ls -1 | grep horizon | tail -1`

lxc-start -n `lxc-ls -1 | grep horizon | tail -1`

And simply wait a few minutes. Image creation should work.