Fatal error: Uncaught Error: Interface "Symfony\Component\Config\Resource\ResourceInterface" not found in C:\Apache24\htdocs\cms_upgrade\vendor\symfony\config\Resource\SelfCheckingResourceInterface.php:20 Stack trace: #0 {main} thrown in C:\Apache24\htdocs\cms_upgrade\vendor\symfony\config\Resource\SelfCheckingResourceInterface.php on line 20