title: Jenkins not triggered by github-webhook
body: <p>I have taken these steps:</p>
  
  <ul>
  <li>Check "GitHub project" and set up the project</li>
  <li>Check "GitHub hook trigger for GITScm polling"</li>
  <li>Setup connection to private repository with user/password</li>
  <li>If I build manually, it works</li>
  <li>In GitHub, create a webhook on push to <a href="http://my_jenkins_url/github-webhook/" rel="nofollow noreferrer">http://my_jenkins_url/github-webhook/</a></li>
  <li>Whenever I commit something, it shows that a webhook has been sent and I get a 200 response code (on github)</li>
  </ul>
  
  <p>But no build is triggered on Jenkins. The GitHub Hook Log says: "Polling has not run yet.". How can I make it "start"? How can I further debug this?</p>
  
  <p>EDIT: I have not added a GitHub Server in Manage Jenkins -> Configure -> GitHub since I ran into issue with the authentication (but that would be a different question). Is this required for github webhooks?</p>
  
  <p>EDIT2: I figured out how to add a GitHub API to the Jenkins config (using Personal Access Token with git hook access enabled). But it doesn't seem to make a difference.</p>