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