Customised Google Cloudshell image does not launch

Customised Google Cloud Shell image fails to launch, error is 'Cloud Shell is experiencing some issues provisioning a VM to you. Please try again in a few minutes'. Repeated attempts to launch also fail.

I created a custom Google Cloudshell Image with an Ansible lab environment and setup tutorial. When this was tested approximately 10 days ago, it seemed to work as expected. Setup was performed using the following guide

Project is hosted with the 'Open in Google Cloud Shell' button here

For convenience, this is the launch button as a link

The customised Cloud Shell image is hosted at

I've checked the permissions and these appear to be open to the public as desired.

Any advice on resolving this, greatly appreciated.

How many English words
do you know?
Test your English vocabulary size, and measure
how many words do you know
Online Test
Powered by Examplum