Fatal error: Uncaught Error: Interface 'Symfony\Component\Config\Definition\ConfigurationInterface' not found in /home/itscm/dev.its.cm/apps/vendor/symfony/config/Tests/Fixtures/Configuration/ExampleConfiguration.php:17 Stack trace: #0 {main} thrown in /home/itscm/dev.its.cm/apps/vendor/symfony/config/Tests/Fixtures/Configuration/ExampleConfiguration.php on line 17