Unable to Run Ansible Playbook from CloudForm Button

I am trying to call the ansible tower playbook using Cloudform Button but i am unable to call the playbook.I am able to create a button for the Ansibleplaybook.
But I am trying to invoke thh playbook by clicking the button.It shows taht request has been made,but it doesn’t invoke the playbook on the Ansible Tower and hence I am unable to run the Ansible jobs from Cloudform Button.

I am unable to resolve the Issue.
I am using Cloudform version 4.5

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