Method GET not allowed for URL /webhooks/rest/webhook

I am facing the issue like, getting no reply from the Rasa.

I deployed rasa into heroku server. At the time of request for reply I got no reply from the server. which log and reply is attached below.

I also tested on the local host for testing purpose. to know whether it is working fine or not , but got the error. which I am attaching the screenshot of it below.

Help will be appreciated. Thnx in advace .