Fatal error: Uncaught Error: Interface "Drupal\Component\Plugin\ConfigurableInterface" not found in /home/qcsvlel/www/core/lib/Drupal/Core/Block/BlockPluginInterface.php:24 Stack trace: #0 {main} thrown in /home/qcsvlel/www/core/lib/Drupal/Core/Block/BlockPluginInterface.php on line 24