Ansible [v2.16.0](https://github.com/ansible/ansible/blob/v2.16.0/changelogs/CHANGELOG-v2.16.rst) has removed [playbooks conditional](https://docs.ansible.com/ansible/latest/playbook_guide/playbooks_conditionals.html) include which has been deprecated since [v2.12](https://github.com/ansible/ansible/blob/v2.12.0/changelogs/CHANGELOG-v2.12.rst#deprecated-features). Use `include_tasks` or `import_tasks` instead.