Fatal error: Uncaught Error: Class 'Symfony\Component\HttpKernel\DependencyInjection\Extension' not found in /home/spadates/www/win4u.test/vendor/sensio/distribution-bundle/Sensio/Bundle/DistributionBundle/Resources/skeleton/acme-demo-bundle/Acme/DemoBundle/DependencyInjection/AcmeDemoExtension.php:10 Stack trace: #0 {main} thrown in /home/spadates/www/win4u.test/vendor/sensio/distribution-bundle/Sensio/Bundle/DistributionBundle/Resources/skeleton/acme-demo-bundle/Acme/DemoBundle/DependencyInjection/AcmeDemoExtension.php on line 10