Fatal error: Uncaught Error: Class "Drupal\rest\Plugin\ResourceBase" not found in /home/qcsvlel/www/core/modules/file/src/Plugin/rest/resource/FileUploadResource.php:59 Stack trace: #0 {main} thrown in /home/qcsvlel/www/core/modules/file/src/Plugin/rest/resource/FileUploadResource.php on line 59