The webhook returned an HTTP status code other than 200.(503 Service Unavailable) Confirm that your bot server returns status code 200 in ... ... <看更多>

kumarmanish511 commented on Jul 27, 2018. The webhook returned an invalid HTTP status code. (The expected status code is 200.) ... ... <看更多>

For sample code on how to verify the callback URL, see Webhook Setup. ... When you receive a webhook event, you must always return a 200 OK HTTP response. ... <看更多>