>>> [!note] Migrated issue <!-- Drupal.org comment --> <!-- Migrated from issue #3395772. --> Reported by: [kfolsom](https://www.drupal.org/user/3511192) Related to !14 >>> <h3 id="summary-problem-motivation">Problem/Motivation</h3> <p>When trying to edit a page on a Drupal 10 website with the CDN module installed, I received the following error:</p> <p><code>Uncaught PHP Exception Error: "Call to undefined function file_url_transform_relative()" at /code/web/modules/contrib/cdn/cdn.module line 53</code></p> <p>The file_url_transform_relative() function was deprecated and removed from Drupal 10:</p> <p><a href="https://www.drupal.org/node/2940031">https://www.drupal.org/node/2940031</a></p> <h4 id="summary-steps-reproduce">Steps to reproduce</h4> <p>Attempt to add or edit content page.</p> <h3 id="summary-proposed-resolution">Proposed resolution</h3> <p>Use a method from the file_url_generator service, as described in the issue linked above.</p> > Related issue: [Issue #3401760](https://www.drupal.org/node/3401760)