Plex components not found, How do I solve?

I have configured plex in my configuration.yaml file only that plex is not even recognized and no error as if the plaex.py script does not exist in the system, how do I solve it?

I also created the plex.conf file

  - platform: plex
    entity_namespace: 'plex'
    include_non_clients: true
    scan_interval: 5
    show_all_controls: false
    use_custom_entity_ids: true
    use_episode_art: true