'ansible_pkg_mgr' is undefined\n\nThe error appears to be in '/srv/ansible/roles/gantsign.golang/tasks/main.yml':

[Kristi Jorgji]

Error in title happened after applying, that variable is not documented in readme.

ansible --version
ansible 2.10.10

[Kristi Jorgji]

Fixed by defining that variable empty, but would be better role to check if defined or not to avoid error