User error: "0" is an invalid render array key

User error: "0" is an invalid render array key in Drupal\Core\Render\Element::children() (line 98 of core/lib/Drupal/Core/Render/Element.php). Drupal\Core\Render\Element::children(Array, 1) (Line: 404) Drupal\Core\Render\Renderer->doRender(Array, ) (Line: 204) Drupal\Core\Render\Renderer->render(Array) (Line: 479) Drupal\Core\Template\TwigExtension->escapeFilter(Object, Array, 'html', NULL, 1) (Line: 456) __TwigTemplate_c59cc24182b22b3f24b906e1d28be51c->doDisplay(Array, Array) (Line: 405) Twig\Template->displayWithErrorHandling(Array, Array) (Line: 378) Twig\Template->display(Array) (Line: 390) Twig\Template->render(Array) (Line: 55) twig_render_template('themes/custom/starter-d9-2022/templates/nodes/node--page-lycee.html.twig', Array) (Line: 384) Drupal\Core\Theme\ThemeManager->render('node', Array) (Line: 433) Drupal\Core\Render\Renderer->doRender(Array, ) (Line: 204) Drupal\Core\Render\Renderer->render(Array, ) (Line: 242) Drupal\Core\Render\MainContent\HtmlRenderer->Drupal\Core\Render\MainContent\{closure}() (Line: 580) Drupal\Core\Render\Renderer->executeInRenderContext(Object, Object) (Line: 243) Drupal\Core\Render\MainContent\HtmlRenderer->prepare(Array, Object, Object) (Line: 132) Drupal\Core\Render\MainContent\HtmlRenderer->renderResponse(Array, Object, Object) (Line: 90) Drupal\Core\EventSubscriber\MainContentViewSubscriber->onViewRenderArray(Object, 'kernel.view', Object) call_user_func(Array, Object, 'kernel.view', Object) (Line: 142)

Comments & Activities

Issue created by @aiphes
Comment over 1 year ago →
🇫🇷France aiphes
Comment about 1 year ago →
🇮🇳India sumit-k
Trie to replicate this issue with some other field, but didn't get it.

IMO To resolve this issue, you can try the following:

Check the structure of content.field_telephone_lycee to ensure it is an array and contains the expected data. You can use kint() or var_dump() to inspect the content variable and ensure it has the correct structure.

If content.field_telephone_lycee is a render array, you should use the children function to access the child elements.

I think content.field_telephone_lycee itself is rendered directly without using an index.
Status changed to Needs review about 1 year ago6:42am 6 July 2023
Comment about 1 year ago →
🇮🇳India sumit-k
Comment about 1 year ago →
🇫🇷France aiphes
Ok will do that and do feedback. Thanks for your advice.

Comment about 1 year ago →

🇫🇷France aiphes

So, I don't have the good debug code I guess, because no information about the fields. Here is my code:

<ol>
  {% for key, value in _context %}
    <li>{{ key }}</li>
  {% endfor %}
</ol>

{{ dump(_context|keys) }}

{{ dump(page) }}
<h2> Debug des variables</h2>
{{ vardumper() }}

Comment about 1 year ago →

🇫🇷France aiphes

Now the line change: {% include directory ~ '/includes/regions_inc/inc_region_zone_3.html.twig' %}

and my include is :

{% if region_Zone_3 is not empty %}
  <div {{ noderegion_attribute.addClass(noderegion_classes,region3_classes).setAttribute('id', 'region-zone-3') }}>
    {{ region_Zone_3 }}
  </div>
  <!-- /#region-zone_3 -->
{% endif %}