Rendering item_list in story break components library
>>> [!note] Migrated issue
<!-- Drupal.org comment -->
<!-- Migrated from issue #3529153. -->
Reported by: [malikah](https://www.drupal.org/user/3847191)
Related to !453
>>>
<h3 id="summary-problem-motivation">Problem/Motivation</h3>
<p>Since v2.0.4, we have error on components library if stories use <code>theme: item_list</code> in slots</p>
<!--break--><p>
<strong>Error in the navigator : </strong></p>
<pre>Le site Web a rencontré une erreur inattendue.<br><br>InvalidArgumentException: "type" is an invalid render array key. Value should be an array but got a string. in Drupal\Core\Render\Element::children() (line 97 of core/lib/Drupal/Core/Render/Element.php).<br><br>template_preprocess_item_list()<br>call_user_func_array() (Line: 261)<br>Drupal\Core\Theme\ThemeManager->render() (Line: 491)<br>Drupal\Core\Render\Renderer->doRender() (Line: 504)<br>Drupal\Core\Render\Renderer->doRender() (Line: 248)<br>Drupal\Core\Render\Renderer->render() (Line: 484)<br>Drupal\Core\Template\TwigExtension->escapeFilter() (Line: 150)<br>__TwigTemplate_41d3604099f154c0e6341b63440d4563->doDisplay() (Line: 402)<br>Twig\Template->yield() (Line: 358)<br>Twig\Template->display() (Line: 373)<br>Twig\Template->render() (Line: 51)<br>Twig\TemplateWrapper->render() (Line: 1520)<br>Twig\Extension\CoreExtension::include() (Line: 50)<br>__TwigTemplate_b902fea1f050b54add1f8ee51323e00b->doDisplay() (Line: 402)<br>Twig\Template->yield() (Line: 141)<br>__TwigTemplate_6f5ea93c11b10e81d5186d1765b7bc8a___412906545->doDisplay() (Line: 402)<br>Twig\Template->yield() (Line: 44)<br>__TwigTemplate_6f5ea93c11b10e81d5186d1765b7bc8a->doDisplay() (Line: 402)<br>Twig\Template->yield() (Line: 358)<br>Twig\Template->display() (Line: 373)<br>Twig\Template->render() (Line: 51)<br>Twig\TemplateWrapper->render() (Line: 234)<br>Drupal\Core\Template\TwigEnvironment->renderInline() (Line: 54)<br>Drupal\Core\Render\Element\InlineTemplate::preRenderInlineTemplate()<br>[...]</pre><h4 id="summary-steps-reproduce">Steps to reproduce</h4>
<ol>
<li>
Use <code>theme: item_list</code> in the content of a slot in component story<br>
<strong>Example :</strong>
<pre> name: Preview<br> slots:<br> content:<br> - theme: item_list<br> list_type: ul<br> items:<br> - type: html_tag<br> tag: p<br> value: 'Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ...'<br> </pre></li>
<li>
Open your components library in navigator (/admin/appearance/ui/components)
</li>
</ol>
<h3 id="summary-proposed-resolution">Proposed resolution</h3>
<p>Looking at the content of 2.1.4 release (<a href="https://www.drupal.org/project/ui_patterns/releases/2.0.4">https://www.drupal.org/project/ui_patterns/releases/2.0.4</a>) it seem to be related to <a href="https://www.drupal.org/project/ui_patterns/issues/3515500">https://www.drupal.org/project/ui_patterns/issues/3515500</a></p>
<p><strong>The bug also concerns UI examples V1.0.2</strong></p>
<p>Our temporary solution is to prefix <code>items</code> content with #</p>
<p><strong>For example :</strong></p>
<pre>- type: html_tag<br> tag: p<br> value: 'Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ...'</pre><p><strong>became :</strong></p>
<pre>- '#type': html_tag<br> '#tag': p<br> '#value': 'Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ...'</pre>
> Related issue: [Issue #3529189](https://www.drupal.org/node/3529189)
issue
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