>>> [!note] Migrated issue <!-- Drupal.org comment --> <!-- Migrated from issue #3551526. --> Reported by: [smustgrave](https://www.drupal.org/user/3252890) Related to !118 >>> <h3 id="summary-problem-motivation">Problem/Motivation</h3> <p>There's a fatal error when viewing a child page</p> <h4 id="summary-steps-reproduce">Steps to reproduce</h4> <p>Create a book<br> Configure content type with child types<br> Add a child page<br> See fatal error</p> <h3 id="summary-proposed-resolution">Proposed resolution</h3> <p>If it's a child page it shouldn't render the "Add child page" link</p> <h3 id="summary-remaining-tasks">Remaining tasks</h3> <p>Fix<br> Add test coverage (expand existing one?)</p> <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 #3551571](https://www.drupal.org/node/3551571)