Choose language
Error message
Deprecated function: Drupal\bootstrap\Utility\Attributes implements the Serializable interface, which is deprecated. Implement __serialize() and __unserialize() instead (or in addition, if support for old PHP versions is necessary) in include() (line 576 of vendor/composer/ClassLoader.php).
include('/usr/src/app/drupal-9/core/includes/bootstrap.inc') (Line: 576)
Composer\Autoload\{closure}('/usr/src/app/drupal-9/core/lib/Drupal/Core/Render/Element/Hidden.php') (Line: 427)
Composer\Autoload\ClassLoader->loadClass('Drupal\Core\Render\Element\Hidden')
class_exists('Drupal\Core\Render\Element\Hidden') (Line: 96)
Drupal\Component\Plugin\Factory\DefaultFactory::getPluginClass('hidden', Array, 'Drupal\Core\Render\Element\ElementInterface') (Line: 17)
Drupal\Core\Plugin\Factory\ContainerFactory->createInstance('hidden', Array) (Line: 83)
Drupal\Component\Plugin\PluginManagerBase->createInstance('hidden', Array) (Line: 141)
Drupal\Core\Render\ElementInfoManager->createInstance('hidden') (Line: 111)
Drupal\Core\Render\ElementInfoManager->buildInfo('claro') (Line: 77)
Drupal\Core\Render\ElementInfoManager->getInfo('form') (Line: 816)
Drupal\Core\Form\FormBuilder->prepareForm('install_select_language_form', Array, Object) (Line: 284)
Drupal\Core\Form\FormBuilder->buildForm('Drupal\Core\Installer\Form\SelectLanguageForm', Object) (Line: 952)
install_get_form('Drupal\Core\Installer\Form\SelectLanguageForm', Array) (Line: 1379)
install_select_language(Array) (Line: 700)
install_run_task(Array, Array) (Line: 571)
install_run_tasks(Array, NULL) (Line: 119)
install_drupal(Object) (Line: 48)