launching VM in openstack throws shade error

[Shabari Nath]

i have tried launching a VM in openstack env with os_server module. When i execute the playbook it throws following error:

fatal: [vsilmasv24-vzbi-com]: FAILED! => {"changed": false, "failed": true, "msg": "shade is required for this module"}

Please help me.

my playbook:

---

- hosts: controller

  sudo: true

  gather_facts: yes

  tasks:

  - name: 'set auth'

    os_server:

       state: present

       auth:

         auth_url: http://166.44.165.157:5000

         username: admin

         password: Keystone2018

         user_id: admin

         project_name: admin

         tenant_name: admin

       name: vm1

       image: 43c66e91-fc48-4272-a416-64fb94ac9720

       timeout: 200

       flavor: 4

       nics:

         - net-id: 511a922a-ca22-4a4f-99bf-e67207133444

         - net-name: vsil-ext-net