Unable to use molecule

Hello, I am unable to get molecule to work. Here's the output when I try to run: molecule test --> Validating schema /home/sudheer/workspace/sudheer-projects/ansible-role-ruby/molecule/default/molecule.yml. Validation completed successfully. --> Test matrix └── default     ├── destroy     ├── syntax     ├── create     ├── prepare     ├── converge     ├── lint     ├── side_effect     ├── verify     └── destroy --> Scenario: 'default' --> Action: 'destroy'     PLAY [Destroy] *****************************************************************     TASK [Destroy molecule instance(s)] ********************************************     fatal: [localhost]: FAILED! => {"msg": "An unhandled exception occurred while templating '{{ lookup('file', molecule_file) | molecule_from_yaml }}'. Error was a <class 'ansible.errors.AnsibleError'>, original message: template error while templating string: no filter named 'molecule_from_yaml'. String: {{ lookup('file', molecule_file) | molecule_from_yaml }}"}     PLAY RECAP *********************************************************************     localhost                  : ok=0    changed=0 unreachable=0    failed=1 ERROR: An error occurred during the test sequence action: 'destroy'. Cleaning up. --> Scenario: 'default' --> Action: 'destroy'     PLAY [Destroy] *****************************************************************     TASK [Destroy molecule instance(s)] ********************************************     fatal: [localhost]: FAILED! => {"msg": "An unhandled exception occurred while templating '{{ lookup('file', molecule_file) | molecule_from_yaml }}'. Error was a <class 'ansible.errors.AnsibleError'>, original message: template error while templating string: no filter named 'molecule_from_yaml'. String: {{ lookup('file', molecule_file) | molecule_from_yaml }}"}     PLAY RECAP *********************************************************************     localhost                  : ok=0    changed=0 unreachable=0    failed=1 ERROR: I have installed Docker and molecule packages. I am able to use Docker outside of molecule on the same host. I have installed these pacakges. python3-molecule.noarch 2.19-2.fc29                         @updates python2-docker.noarch 3.5.0-1.fc29                        @fedora docker.x86_64 2:1.13.1-62.git9cb56fd.fc29         @fedora I have tried removing python2-docker and installing python3-docker. There's no change in result. Am I missing something? - Sudheer