Fatal error: Uncaught Error: Interface "Symfony\Component\DependencyInjection\Compiler\CompilerPassInterface" not found in C:\Apache24\htdocs\cms_upgrade\vendor\symfony\validator\DependencyInjection\AddConstraintValidatorsPass.php:23 Stack trace: #0 {main} thrown in C:\Apache24\htdocs\cms_upgrade\vendor\symfony\validator\DependencyInjection\AddConstraintValidatorsPass.php on line 23