Fatal error: Uncaught Error: Class 'Symfony\Component\Translation\Catalogue\AbstractOperation' not found in C:\Apache24\htdocs\vendor.old2\symfony\translation\Catalogue\MergeOperation.php:25 Stack trace: #0 {main} thrown in C:\Apache24\htdocs\vendor.old2\symfony\translation\Catalogue\MergeOperation.php on line 25