Webhooks not working on my Bitbucket Server v6.3.2

[Daniel]

The following webhook has been tested in Gitlab

http://superuser:1197084e4d98207d89d42ca05df15ec121@myjenkins.local/jenkins/job/test/buildWithParameters?token=wtthothuothutht. 

This webook triggers a job in Jenkins. I logged in my BB server and tested the connectivity between Jenkins and BB, by opening a console and executing the following command: 

curl -X POST "http://superuser:1197084e4d98207d89d42ca05df15ec121@myjenkins.local/jenkins/job/test/buildWithParameters?token=wtthothuothutht"

I was able to execute the jenkins job. That confirms that both servers can communicate with each other. 

Now the issue is that if I add the same webhook to BB and I try to test it, the webhook wont work.

Headers:

X-Event-Key: diagnostics:ping
X-Request-Id: cba39870-2f74-43c1-92f3-f7b47e6c9007
Content-Type: application/json

Body

{"test": true}

Response

Request cannot be executed; I/O reactor status: STOPPED

[Daniel]

anyone?