Facebook messenger not responding after Rasa Opensource integration

issue with api responses I followed documentation as said in the Official pages

@Gourav Please take note of the guide on How to use Solutions & Mentions, as well as the guide on How to ask a great question. This post at present abides by neither of these guidelines. Please refrain from tagging multiple people from the community or Rasa team members in the future.

For your own sake - The community can only work with the information you provide, so it’s pretty hard to help with a post saying something broke without any error message or details.