Fatal error: Uncaught Error: Interface 'Symfony\Component\DependencyInjection\Compiler\CompilerPassInterface' not found in C:\Apache24\htdocs\InvoiceTracking\vendor\symfony\cache\DependencyInjection\CachePoolClearerPass.php:21 Stack trace: #0 {main} thrown in C:\Apache24\htdocs\InvoiceTracking\vendor\symfony\cache\DependencyInjection\CachePoolClearerPass.php on line 21