>>> [!note] Migrated issue <!-- Drupal.org comment --> <!-- Migrated from issue #3540815. --> Reported by: [jurgenhaas](https://www.drupal.org/user/168924) >>> <h3 id="summary-problem-motivation">Problem/Motivation</h3> <p>Since core introduced some fallbacks to the class loader, the usage of <code>class_exist</code> could result in false positives.</p> <h3 id="summary-proposed-resolution">Proposed resolution</h3> <p>Replace the usage of it in <code>\Drupal\eca\EcaServiceProvider</code> with the container modules.</p>