Fatal error: Uncaught Error: Interface "PhpCsFixer\Differ\DifferInterface" not found in I:\www\pvcTestingUtils\vendor\friendsofphp\php-cs-fixer\src\Differ\UnifiedDiffer.php:21 Stack trace: #0 {main} thrown in I:\www\pvcTestingUtils\vendor\friendsofphp\php-cs-fixer\src\Differ\UnifiedDiffer.php on line 21