Execution environment is missing or deleted

I have deployed Ansible automation on a RHEL9 Virtual machine to test, for learning purpose.
Trying to run a simple playbook, or when trying syncing from git source in Project fails due to Execution Environment is missing. However it is not a requirement, not mandatory. It is the first time I heard about this.
What changed? Never used execution environment when I run in the past playbooks from inside ssh session.
For example I tried this quickstart below and here there is no execution environment set up.
Automation Controller Quick Setup Guide v4.4
https://docs.ansible.com/automation-controller/latest/html/quickstart/index.html

Could you please help how to run playbooks and run synchronizations from git url without the need of Execution Environment?