timeout on bitbucket webhook created by jenkins-bitbucket server integration plugin

[Kanav Ghai]

I have followed the instructions per this article:

https://community.atlassian.com/t5/Bitbucket-articles/Atlassian-supported-Jenkins-integration-for-Bitbucket-Server/ba-p/1148326

The webhook is automatically created in Bitbucket upon saving the Jenkins Project configuration. The URL endpoint it creates is:

http://<url>:8080/bitbucket-server-webhook/trigger

Upon pushing a commit, the webhook triggers, but always errors with the timeout message:

java.lang.RuntimeException: java.net.ConnectException: Timeout connecting to [/3.220.0.132:8081]

(the number after http-outgoing- varies but is always 3 digits)

I get the same timeout error if I try to test the connection from the Edit Webhook page.

I also tried : http://<url>:8080/bitbucket-hook/ , but I get the same error.

Any ideas?