Chapter 9: Error with deployment of Ruby on Rails app

## Description:

Issue arise during **Ensure demo application is at correct release.** Ansible task:


## Environment
Vagrant 2.3.4
Ansible 2.14.2
Python 3.9.2
Jinja 3.1.2

Start by reproducing the failure in the Ansible task “Ensure demo application is at correct release” using Vagrant 2.3.4, Ansible 2.14.2, Python 3.9.2, and Jinja 3.1.2. Inspect the task and the attached screenshot to identify the deployment error; done means the Ruby on Rails demo application reaches the correct release successfully.

Written by the indexing model from the issue text.