Fatal error: Uncaught Error: Interface 'Composer\DependencyResolver\Operation\OperationInterface' not found in C:\Apache24\htdocs\InvoiceTracking\vendor\symfony\flex\src\InformationOperation.php:11 Stack trace: #0 {main} thrown in C:\Apache24\htdocs\InvoiceTracking\vendor\symfony\flex\src\InformationOperation.php on line 11