[ceph-users] Ceph Ansible - - name: set grafana_server_addr fact - ipv4

Hi Ceph: nautilus (14.2.2) NFS-Ganesha v 2.8 ceph-ansible stable 4.0 << git checkout 28th Aug CentOS 7 I am trying to do a fresh installation using Ceph Ansible and I am getting the following error when running the playbook.  I have not enabled or config dashboard/grafana/prometheus yet. fatal: [stor1]: FAILED! =>   msg: |-     The task includes an option with an undefined variable. The error was: No first item, sequence was empty.     The error appears to be in '/usr/share/ceph-ansible/roles/ceph-facts/tasks/facts.yml': line 314, column 3, but may     be elsewhere in the file depending on the exact syntax problem.     The offending line appears to be:     - name: set grafana_server_addr fact - ipv4       ^ here If I remove [grafana-server] from the /etc/ansible/hosts file I get fatal: [stor1]: FAILED! => changed=false   msg: you must add a [grafana-server] group and add at least one node. Any idea what might be causing this?