Hi,
INFO: Openstack wallaby on centos 8 stream

I am trying to deploy a DCN and during the ceph deploy command i am getting the following error:

(undercloud) [stack@hkg2director dcn01]$ openstack overcloud ceph deploy dcn01_overcloud-baremetal-deployed.yaml --stack dcn01 --config initial-ceph.conf --output deployed_ceph.yaml --container-image-prepare containers-prepare-parameter.yaml --network-data custom_network_data.yaml --cluster dcn01 --roles-data dcn01_roles.yaml -vvv

The full traceback is:
Traceback (most recent call last):
  File "/tmp/ansible_ceph_spec_bootstrap_payload_c4o_1q1y/ansible_ceph_spec_bootstrap_payload.zip/ansible/modules/ceph_spec_bootstrap.py", line 241, in get_deployed_roles_to_hosts
UnboundLocalError: local variable 'matching_hosts' referenced before assignment

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "<stdin>", line 102, in <module>
  File "<stdin>", line 94, in _ansiballz_main
  File "<stdin>", line 40, in invoke_module
  File "/usr/lib64/python3.6/runpy.py", line 205, in run_module
    return _run_module_code(code, init_globals, run_name, mod_spec)
  File "/usr/lib64/python3.6/runpy.py", line 96, in _run_module_code
    mod_name, mod_spec, pkg_name, script_name)
  File "/usr/lib64/python3.6/runpy.py", line 85, in _run_code
    exec(code, run_globals)
  File "/tmp/ansible_ceph_spec_bootstrap_payload_c4o_1q1y/ansible_ceph_spec_bootstrap_payload.zip/ansible/modules/ceph_spec_bootstrap.py", line 500, in <module>
  File "/tmp/ansible_ceph_spec_bootstrap_payload_c4o_1q1y/ansible_ceph_spec_bootstrap_payload.zip/ansible/modules/ceph_spec_bootstrap.py", line 471, in main
  File "/tmp/ansible_ceph_spec_bootstrap_payload_c4o_1q1y/ansible_ceph_spec_bootstrap_payload.zip/ansible/modules/ceph_spec_bootstrap.py", line 246, in get_deployed_roles_to_hosts
RuntimeError: The expected HostnameMap and RoleHostnameFormat are not defined in data file: /home/stack/dcn01/dcn01_overcloud-baremetal-deployed.yaml
2023-01-13 01:27:15.811878 | 48d539a1-1679-ea57-d54d-000000000013 | FATAL | Create Ceph spec based on baremetal_deployed_path and tripleo_roles | undercloud | error={
    "changed": false,
    "module_stderr": "Traceback (most recent call last):\n File \"/tmp/ansible_ceph_spec_bootstrap_payload_c4o_1q1y/ansible_ceph_spec_bootstrap_payload.zip/ansible/modules/ceph_spec_bootstrap.py\", line 241, in get_deployed_roles_to_hosts\nUnboundLocalError: local variable 'matching_hosts' referenced before assignment\n\nDuring handling of the above exception, another exception occurred:\n\nTraceback (most recent call last):\n File \"<stdin>\", line 102, in <module>\n File \"<stdin>\", line 94, in _ansiballz_main\n File \"<stdin>\", line 40, in invoke_module\n File \"/usr/lib64/python3.6/runpy.py\", line 205, in run_module\n return _run_module_code(code, init_globals, run_name, mod_spec)\n File \"/usr/lib64/python3.6/runpy.py\", line 96, in _run_module_code\n mod_name, mod_spec, pkg_name, script_name)\n File \"/usr/lib64/python3.6/runpy.py\", line 85, in _run_code\n exec(code, run_globals)\n File \"/tmp/ansible_ceph_spec_bootstrap_payload_c4o_1q1y/ansible_ceph_spec_bootstrap_payload.zip/ansible/modules/ceph_spec_bootstrap.py\", line 500, in <module>\n File \"/tmp/ansible_ceph_spec_bootstrap_payload_c4o_1q1y/ansible_ceph_spec_bootstrap_payload.zip/ansible/modules/ceph_spec_bootstrap.py\", line 471, in main\n File \"/tmp/ansible_ceph_spec_bootstrap_payload_c4o_1q1y/ansible_ceph_spec_bootstrap_payload.zip/ansible/modules/ceph_spec_bootstrap.py\", line 246, in get_deployed_roles_to_hosts\nRuntimeError: The expected HostnameMap and RoleHostnameFormat are not defined in data file: /home/stack/dcn01/dcn01_overcloud-baremetal-deployed.yaml\n",
    "module_stdout": "",
    "msg": "MODULE FAILURE\nSee stdout/stderr for the exact error",
    "rc": 1
}

(undercloud) [stack@hkg2director dcn01]$ cat /home/stack/dcn01/dcn01_overcloud-baremetal-deployed.yaml
parameter_defaults:
  DeployedServerPortMap:
    dcn01-hci-0-ctlplane:
      fixed_ips:
      - ip_address: 172.25.221.96
    dcn01-hci-1-ctlplane:
      fixed_ips:
      - ip_address: 172.25.221.90
    dcn01-hci-2-ctlplane:
      fixed_ips:
      - ip_address: 172.25.221.106
  HCICount: 3
  HCIHostnameFormat: '%stackname%-hci-%index%'
  HostnameMap:
    dcn01-hci-0: dcn01-hci-0
    dcn01-hci-1: dcn01-hci-1
    dcn01-hci-2: dcn01-hci-2
  NodePortMap:
    dcn01-hci-0:
      ctlplane:
        ip_address: 172.25.221.96
...>

Can someone please tell me what could be the issue here??
Am I missing something?

With regards,

Swogat Pradhan