Hi all, I struggle a bit setting up the Webhook for the pact verification pipeline of the provider. I added the trigger to the GitLab Repository and can call that successfully when using Postman. But the same call when testing the webhook setup fails and returns an 401 error. Does anyone know what I'm missing?

[2024-04-18T08:09:56Z] DEBUG: Webhook context {"base_url":"<https://foo.pactflow.io>","event_name":"test"}
[2024-04-18T08:09:56Z] INFO: HTTP/1.1 POST <https://gitlab.foo/api/v4/projects/42/trigger/pipeline?token=********&ref=master>
[2024-04-18T08:09:56Z] INFO: accept: */*
[2024-04-18T08:09:56Z] INFO: user-agent: Pact Broker v2.109.1
[2024-04-18T08:09:56Z] INFO: host: gitlab.foo
[2024-04-18T08:09:56Z] INFO: content-length: 0
[2024-04-18T08:09:56Z] INFO: content-type: application/x-www-form-urlencoded
[2024-04-18T08:09:56Z] INFO: 
[2024-04-18T08:09:56Z] INFO: HTTP/1.1 401 Unauthorized
[2024-04-18T08:09:56Z] INFO: content-length: 36
[2024-04-18T08:09:56Z] INFO: content-type: text/html; charset=UTF-8
[2024-04-18T08:09:56Z] INFO: x-goog-iap-generated-response: true
[2024-04-18T08:09:56Z] INFO: date: Thu, 18 Apr 2024 08:09:56 GMT
[2024-04-18T08:09:56Z] INFO: alt-svc: h3=":443"; ma=2592000,h3-29=":443"; ma=2592000
[2024-04-18T08:09:56Z] INFO: Invalid IAP credentials: empty token
[2024-04-18T08:09:56Z] INFO: Webhook execution failed

Mind sharing how you setup the webhook vs the postman test?

Sure, this is the webhook setup

Are there other headers in the postman tab that need to be sent?