Fatal error: Uncaught Error: Class "Drupal\Component\Annotation\Plugin" not found in /home/www/drupal8/test/core/modules/layout_builder/src/Annotation/SectionStorage.php:16 Stack trace: #0 {main} thrown in /home/www/drupal8/test/core/modules/layout_builder/src/Annotation/SectionStorage.php on line 16