Fatal error: Uncaught Error: Interface "Sylius\Bundle\ThemeBundle\Configuration\ConfigurationProcessorInterface" not found in /home/flighto/e-commerce/vendor/sylius/theme-bundle/src/Configuration/SymfonyConfigurationProcessor.php:19 Stack trace: #0 {main} thrown in /home/flighto/e-commerce/vendor/sylius/theme-bundle/src/Configuration/SymfonyConfigurationProcessor.php on line 19