Fatal error: Uncaught Error: Class "Drupal\Core\Form\ConfirmFormBase" not found in /home/qcsvlel/www/core/modules/layout_builder/src/Form/LayoutBuilderDisableForm.php:20 Stack trace: #0 {main} thrown in /home/qcsvlel/www/core/modules/layout_builder/src/Form/LayoutBuilderDisableForm.php on line 20