Page 35 - Ansible -m package can't tell which package manager to use

This could be an issue with my Ansible version (I'm using 2.6.0)

When i run the following command in chapter 3, page 35 (top of the page

ansible app -b -m package -a "name=git state=present"

I get the following.
192.168.60.4 | FAILED! => {
"changed": false,
"msg": "Could not detect which package manager to use. Try gathering facts or setting the \"use\" option."
}
192.168.60.5 | FAILED! => {
"changed": false,
"msg": "Could not detect which package manager to use. Try gathering facts or setting the \"use\" option."
}

Start with the command at chapter 3, page 35 and reproduce it with Ansible 2.6.0 using the reported hosts. Check whether gathering facts or setting the package module's use option resolves the failure, then update the page so the command has a verified resolution or clearly documents the required setup.

Written by the indexing model from the issue text.