>>> [!note] Migrated issue <!-- Drupal.org comment --> <!-- Migrated from issue #3612511. --> Reported by: [welly](https://www.drupal.org/user/354705) Related to !7 >>> <h3 id="summary-problem-motivation">Problem/Motivation</h3> <p>Deleting a node (or any aliased entity) can trigger a fatal error when the Trash module is installed, or more generally whenever a `PathAliasDependency` row references a path alias that no longer exists: </p> <pre>Error: Call to a member function getPath() on null in Drupal\pathauto_update\PathAliasDependencyRepository-&gt;updatePathAliasesByType() (line 244 of modules/contrib/pathauto_update/src/PathAliasDependencyRepository.php).&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </pre><h4 id="summary-steps-reproduce">Steps to reproduce</h4> <p>1. Install <em>trash</em> alongside <em>pathauto_update</em>.<br> 2. Have content whose alias is a dependency of another alias.<br> 3. Delete (send to trash) a node. Trash soft-deletes the associated path alias, which re-fires an entity update; "updatePathAliasesByType()" then iterates the dependencies and hits a dependency whose alias has been removed.</p> <p>(Not strictly Trash-specific, any state where a <em>PathAliasDependency</em> points at a deleted alias reproduces it, since `getPathAlias()` is documented to return NULL in that case.)</p> <h3 id="summary-proposed-resolution">Proposed resolution</h3> <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>