Fatal error: Uncaught Error: Class "Symfony\Component\HttpKernel\DependencyInjection\Extension" not found in /home/iotechtniu/ioacademy/vendor/doctrine/doctrine-fixtures-bundle/DependencyInjection/DoctrineFixturesExtension.php:16 Stack trace: #0 {main} thrown in /home/iotechtniu/ioacademy/vendor/doctrine/doctrine-fixtures-bundle/DependencyInjection/DoctrineFixturesExtension.php on line 16