Fatal error: Uncaught Error: Class 'Symfony\Component\HttpKernel\DependencyInjection\Extension' not found in /home/spadates/www/win4u.test/vendor/symfony/swiftmailer-bundle/Symfony/Bundle/SwiftmailerBundle/DependencyInjection/SwiftmailerExtension.php:26 Stack trace: #0 {main} thrown in /home/spadates/www/win4u.test/vendor/symfony/swiftmailer-bundle/Symfony/Bundle/SwiftmailerBundle/DependencyInjection/SwiftmailerExtension.php on line 26