Overcloud deployment returns msg='list index out of range'

Solution Verified - Updated -

Issue

While deploying the overcloud, I get the following error:

The action raised an exception [action_ex_id=4666a2d2-d6d5-4fac-8fcf-953f8565180f, msg='list index out of range', action_cls='<class 'mistral.actions.action_factory.AnsibleGenerateInventoryAction'>', attributes='{}', params='{'ansible_ssh_user': 'tripleo-admin', 'ansible_python_interpreter': None, 'work_dir': '/var/lib/mistral/overcloud', 'plan_name': 'overcloud', 'ssh_network': 'ctlplane', 'undercloud_key_file': '/var/lib/mistral/.ssh/tripleo-admin-rsa'}']

Environment

Red Hat Openstack Platfrom 16.1

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