Fatal error: Uncaught Error: Class "SebastianBergmann\Diff\Output\AbstractChunkOutputBuilder" not found in I:\www\frameworks\Symfony\doctrine\vendor\sebastian\diff\src\Output\UnifiedDiffOutputBuilder.php:27 Stack trace: #0 {main} thrown in I:\www\frameworks\Symfony\doctrine\vendor\sebastian\diff\src\Output\UnifiedDiffOutputBuilder.php on line 27