>>> [!note] Migrated issue <!-- Drupal.org comment --> <!-- Migrated from issue #2879214. --> Reported by: [dagmar](https://www.drupal.org/user/154086) >>> <h3 id="summary-problem-motivation">Problem/Motivation</h3> <p>Drupal 8.4.x uses symfony 3 <span class="drupalorg-gitlab-issue-link project-issue-status-info project-issue-status-7"><a href="https://www.drupal.org/project/drupal/issues/2712647" title="Status: Closed (fixed)">#2712647: Update Symfony components to ~3.2</a></span>. But webprofiler module was not ported yet.</p> <p>This is evident with errors like:</p> <p><code>Uncaught Error: Call to undefined method Symfony\Component\DependencyInjection\Reference::isStrict()</code></p> <h3 id="summary-proposed-resolution">Proposed resolution</h3> <p>(Probably) Create a new branch of this module.<br> Follow the <a href="https://github.com/symfony/symfony/blob/2.8/UPGRADE-3.0.md">https://github.com/symfony/symfony/blob/2.8/UPGRADE-3.0.md</a> guide</p> <h3 id="summary-remaining-tasks">Remaining tasks</h3> <h3 id="summary-ui-changes">User interface changes</h3> <h3 id="summary-api-changes">API changes</h3> <h3 id="summary-data-model-changes">Data model changes</h3> > Related issue: [Issue #2882954](https://www.drupal.org/node/2882954)