Fatal error: Uncaught Error: Class 'Symfony\Component\Security\Core\Authorization\Voter\RoleVoter' not found in C:\Apache24\htdocs\InvoiceTracking\vendor\symfony\security-core\Authorization\Voter\RoleHierarchyVoter.php:23 Stack trace: #0 {main} thrown in C:\Apache24\htdocs\InvoiceTracking\vendor\symfony\security-core\Authorization\Voter\RoleHierarchyVoter.php on line 23