After completing all the steps. Request Url is not getting verified. Here is the heroku logs: 2022-07-18T14:52:18.368285+00:00 heroku[router]: at=error code=H10 desc="App crashed" method=POST path="/slack/events" host=flat-heroku.herokuapp.com request_id=43e6eb5e-2605-4bb6-88e8-8d4baf415afe fwd="3.235.6.209" dyno= connect= service= status=503 bytes= protocol=https <img width="681" alt="image" src="https://user-images.githubusercontent.com/31919314/179539300-0cf36c55-2e73-446e-8958-805c16d46dcb.png">
After completing all the steps. Request Url is not getting verified.
Here is the heroku logs: 2022-07-18T14:52:18.368285+00:00 heroku[router]: at=error code=H10 desc="App crashed" method=POST path="/slack/events" host=flat-heroku.herokuapp.com request_id=43e6eb5e-2605-4bb6-88e8-8d4baf415afe fwd="3.235.6.209" dyno= connect= service= status=503 bytes= protocol=https