Fatal error: Uncaught Error: Class "SebastianBergmann\Diff\Output\AbstractChunkOutputBuilder" not found in C:\Apache24_x64\htdocs\ipad\vendor\sebastian\diff\src\Output\UnifiedDiffOutputBuilder.php:18 Stack trace: #0 {main} thrown in C:\Apache24_x64\htdocs\ipad\vendor\sebastian\diff\src\Output\UnifiedDiffOutputBuilder.php on line 18