TASK [include_role : tripleo-bootstrap] Fails - "No file was found when using first_found. Use errors='ignore' to allow this task to be skipped if no files are found"

Issue

• During the initial install of a RHOSP16 Overcloud the installation fails with an error similar to this:

# openstack overcloud deploy --templates tripleo-heat-templates/   --roles-file ~/tripleo-heat-templates/roles_data_contrail.yaml   -n tripleo-heat-templates/network_data.yaml   -e tripleo-heat-templates/environments/network-isolation.yaml   -e tripleo-heat-templates/environments/contrail/contrail-services.yaml
  -e tripleo-heat-templates/environments/contrail/contrail-net.yaml   -e tripleo-heat-templates/environments/contrail/contrail-plugins.yaml   -e containers-prepare-parameter.yaml   -e ~/rhsm-overcloud.yaml
[...]
2021-07-20 21:28:17,936 p=416163 u=mistral n=ansible | ok: [overcloud-novacompute-0] => {
    "msg": "Use --start-at-task \"Common roles for TripleO servers\" to resume from this task"
}
2021-07-20 21:28:17,943 p=416163 u=mistral n=ansible | TASK [include_role : tripleo-bootstrap] ****************************************
2021-07-20 21:28:17,944 p=416163 u=mistral n=ansible | Tuesday 20 July 2021  21:28:17 -0700 (0:00:00.063)       0:00:06.480 ********** 
2021-07-20 21:28:18,081 p=416163 u=mistral n=ansible | TASK [tripleo-bootstrap : Gather variables for each operating system] **********
2021-07-20 21:28:18,082 p=416163 u=mistral n=ansible | Tuesday 20 July 2021  21:28:18 -0700 (0:00:00.137)       0:00:06.618 ********** 
2021-07-20 21:28:18,118 p=416163 u=mistral n=ansible | fatal: [overcloud-novacompute-0]: FAILED! => {"msg": "No file was found when using first_found. Use errors='ignore' to allow this task to be skipped if no files are found"}
2021-07-20 21:28:18,170 p=416163 u=mistral n=ansible | fatal: [overcloud-contrailcontroller-0]: FAILED! => {"msg": "No file was found when using first_found. Use errors='ignore' to allow this task to be skipped if no files are found"}
2021-07-20 21:28:18,171 p=416163 u=mistral n=ansible | fatal: [overcloud-controller-0]: FAILED! => {"msg": "No file was found when using first_found. Use errors='ignore' to allow this task to be skipped if no files are found"}
2021-07-20 21:28:18,171 p=416163 u=mistral n=ansible | NO MORE HOSTS LEFT *************************************************************