Fatal error: Uncaught Error: Interface 'Symfony\Component\DependencyInjection\Compiler\CompilerPassInterface' not found in /home/devmecseminars/public_html/mec/vendor/symfony/dependency-injection/Compiler/ResolvePrivatesPass.php:19 Stack trace: #0 {main} thrown in /home/devmecseminars/public_html/mec/vendor/symfony/dependency-injection/Compiler/ResolvePrivatesPass.php on line 19