Fatal error: Uncaught Error: Interface "SebastianBergmann\Diff\Output\DiffOutputBuilderInterface" not found in /home/qcsvlel/www/core/lib/Drupal/Component/Diff/DiffOpOutputBuilder.php:16 Stack trace: #0 {main} thrown in /home/qcsvlel/www/core/lib/Drupal/Component/Diff/DiffOpOutputBuilder.php on line 16