title: Gnome Shell extensions not loading, no error message available
body: <p>I have two gnome-shell extensions that don't appear to be loading after upgrading to 3.24. In gnome-tweak-tool they have a warning sign icon with "Error loading extension", and nothing else. I tried using looking glass (<code>lg</code>), and it just says "Error", and that the extension "has not reported any errors".</p>
  
  <p>How can I debug the extension to find out why exactly it's not loading?</p>