Check out example codes for "{"msg": "Attempting to decrypt but no vault secrets found"}". It will help you in understanding the concepts better.

Code Example 1

ansible-playbook test.yml --vault-password-file path_to/vault_secret.sh

or

#Add to ansible.cfg:
[defaults]
vault_password_file=path_to/vault_secret.sh

or 

ansible-playbook copy.yaml -i hosts.ini --ask-vault-pass

Learn ReactJs, React Native from akashmittal.com