SaaS: 'could not locate file in lookup'

[droopygit]

I'm trying to run a playbook with a configuration of type 'saas'. When I run the playbook I have the following error:

TASK [ibm.blockchain_platform_manager : Create node JSON file] *****************
fatal: [localhost]: FAILED! => {"msg": "An unhandled exception occurred while running the lookup plugin 'template'. Error was a <class 'ansible.errors.AnsibleError'>, original message: An unhandled exception occurred while running the lookup plugin 'file'. Error was a <class 'ansible.errors.AnsibleError'>, original message: could not locate file in lookup: "}

It seems that the template is not found: "{{ lookup('template', 'saas/ca-node.json.j2') | to_nice_json }}"