Argument #1 ($elements) must be of type array, null given, called in core layout_discovery.module

The website encountered an unexpected error. Try again later. TypeError: Drupal\Core\Render\Element::children(): Argument #1 ($elements) must be of type array, null given, called in /web/core/modules/layout_discovery/layout_discovery.module on line 45 in Drupal\Core\Render\Element::children() (line 72 of core/lib/Drupal/Core/Render/Element.php). template_preprocess_layout() call_user_func_array() (Line: 261) Drupal\Core\Theme\ThemeManager->render() (Line: 480) Drupal\Core\Render\Renderer->doRender() (Line: 240) Drupal\Core\Render\Renderer->render() (Line: 475) Drupal\Core\Template\TwigExtension->escapeFilter() (Line: 125) __TwigTemplate_8f6677c23a6d65de338b6ae8876df912->doDisplay() (Line: 394) Twig\Template->displayWithErrorHandling() (Line: 367) Twig\Template->display() (Line: 379) Twig\Template->render() (Line: 38) Twig\TemplateWrapper->render() (Line: 39) twig_render_template() (Line: 348)

// Create an attributes variable for each region. foreach (Element::children($variables['content']) as $name) { if (!isset($variables['content'][$name]['#attributes'])) { $variables['content'][$name]['#attributes'] = []; } $variables['region_attributes'][$name] = new Attribute($variables['content'][$name]['#attributes']); }

if (isset($variables['content'])) { foreach (Element::children($variables['content']) as $name) { if (!isset($variables['content'][$name]['#attributes'])) { $variables['content'][$name]['#attributes'] = []; } $variables['region_attributes'][$name] = new Attribute($variables['content'][$name]['#attributes']); } }

Comments & Activities

Issue created by @Chris64
Comment 11 months ago →
🇫🇷France Chris64 France
Status changed to Needs review 11 months ago10:16pm 31 January 2024
Comment 11 months ago →
🇫🇷France Chris64 France
Status changed to Active 11 months ago2:45pm 1 February 2024
Comment 11 months ago →
🇺🇸United States smustgrave
Don't see anything to review.

But will need steps to reproduce this issue.

Will also have to do some research about why that variable is empty, hopefully the steps help with that. Usually just putting an isset() could be masking a larger issue
Status changed to Postponed: needs info 10 months ago1:31pm 22 February 2024
Comment 10 months ago →
🇫🇷France Chris64 France
Usually just putting an isset() could be masking a larger issue

Agree with this principle. And the other part.

Original code reinstalled. But the problem does not happen any where. Therefore not possible for me actually to get more information about the issue...
Comment 8 months ago →
🇨🇭Switzerland saschaeggi Zurich
This happens to me as well on 11.x-dev and the proposed solution seems to fix the problem
Comment 7 months ago →
🇪🇸Spain marcoscano Barcelona, Spain
I was kind of able to reproduce this by installing the Minimal profile, then applying a recipe that enabled gin + gin_toolbar + navigation (and imported config '*' from the navigation module).
Comment 7 months ago →
🇨🇦Canada laura.j.johnson@gmail.com Toronto
I am also running into this by installing the Minimal profile and then applying a recipe that enables gin + gin_toolbar + navigation and importing config '*' from the navigation module.
Comment 6 months ago →
🇬🇧United Kingdom dakala Fairford, Glos
Same setup here - minimal profile, recipe with gin etc. Until this morning, everything was fine. Then I noticed I'd been using the dev version of gin, so I upgraded to the RC. Immediately, my site was broken with the error in this issue. A search for the error brought me here. When I reverted back to the dev version of gin, the error was gone. Perhaps gin is the source of this?

Argument #1 ($elements) must be of type array, null given, called in core layout_discovery.module

Problem/Motivation

Steps to reproduce

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API changes

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