HELP! A valid URL was not provided

I’ve already set up like on the video - YouTube,

set the webhook end point on http://128.199.201.41:8000/api/method/erpnext.erpnext_integrations.connectors.woocommerce_connection.order

each time order create
it generated the correct payload on the logs
but gave me this error.

[Code] => http_request_failed
[Message] => A valid URL was not provided.