title: "Resource not accessible by integration" when trying to create trigger
body: <p>This is a very simple question, but after trying to find an answer for 3 hours I am asking, so I apologize if it is a duplicate.</p>
  
  <p>I am trying to add a "Continuous deployment trigger" to my Azure DevOps Pipeline:</p>
  
  <p><a href="https://i.stack.imgur.com/Appan.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/Appan.png" alt="enter image description here"></a></p>
  
  <p>But after configuring the Branch Filters and trying to save, I get the following error message:</p>
  
  <blockquote>
    <p>"GitHub Could not create service hooks subscription Unable to
    configure a service on the selected GitHub repository. GitHub returned
    the error 'Resource not accessible by integration'. "</p>
  </blockquote>
  
  <p>My repository is hosted on GitHub and it is private, and so is my project on Azure DevOps</p>
  
  <p>I would expect this to "just work", so I really don't see which other information would be relevant on this question, so apologies in advance in case I forgot to mention something</p>