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HELP! A valid URL was not provided

I’ve already set up like on the video https://www.youtube.com/watch?v=Y9UvRPmBSoI,

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.