Fatal error: Uncaught Error: Class "Drupal\Core\DependencyInjection\ServiceProviderBase" not found in /home/qcsvlel/www/core/modules/workspaces/src/WorkspacesServiceProvider.php:13 Stack trace: #0 {main} thrown in /home/qcsvlel/www/core/modules/workspaces/src/WorkspacesServiceProvider.php on line 13