Fatal error: Uncaught Error: Interface "Symfony\Component\DependencyInjection\Extension\ExtensionInterface" not found in C:\Apache24\htdocs\cw\vendor\symfony\dependency-injection\Extension\Extension.php:26 Stack trace: #0 {main} thrown in C:\Apache24\htdocs\cw\vendor\symfony\dependency-injection\Extension\Extension.php on line 26