Run ceph-ansible infrastructure-playbooks/playbook.yml failed with error "_monitor_addresses is undefined"

Issue

Run ceph ansible infrastructure-playbooks/<playbook.yml> failed with error "_monitor_addresses is undefined"

[admin@admin ceph-ansible]$ ansible-playbook infrastructure-playbooks/shrink-osd.yml -e osd_to_kill=0

TASK [ceph-facts : set_fact _monitor_address to monitor_interface - ipv6] ********************************************
task path: /usr/share/ceph-ansible/roles/ceph-facts/tasks/set_monitor_address.yml:42
Tuesday 26 May 2020  14:32:55 +0800 (0:00:00.162)       0:00:23.621 ***********
skipping: [localhost] => (item=cephnode)  => changed=false
  ansible_loop_var: item
  item: cephnode
  skip_reason: Conditional result was False

TASK [ceph-facts : set_fact _current_monitor_address] ****************************************************************
task path: /usr/share/ceph-ansible/roles/ceph-facts/tasks/set_monitor_address.yml:53
Tuesday 26 May 2020  14:32:55 +0800 (0:00:00.065)       0:00:23.686 ***********
fatal: [localhost]: FAILED! =>
  msg: '''_monitor_addresses'' is undefined'  

PLAY RECAP ***********************************************************************************************************
cephnode            : ok=1    changed=0    unreachable=0    failed=0    skipped=0    rescued=0    ignored=0
localhost                  : ok=24   changed=1    unreachable=0    failed=1    skipped=29   rescued=0    ignored=0