Fatal error: Uncaught Error: Class "Drupal\Component\Plugin\Derivative\DeriverBase" not found in /home/qcsvlel/www/core/lib/Drupal/Core/Entity/Plugin/Derivative/VersionHistoryLocalTasks.php:13 Stack trace: #0 {main} thrown in /home/qcsvlel/www/core/lib/Drupal/Core/Entity/Plugin/Derivative/VersionHistoryLocalTasks.php on line 13