Update app.py

app.py

@@ -39,7 +39,7 @@ def index():
 def handle_event():
   # Handle the event here
     event=request.json['type']
-   
+    print(event)
     if event=='url_verification':  
       # Respond to the challenge request with a 200 OK HTTP status code
       # and the value of the challenge parameter in the response body