Fatal error: Uncaught Error: Interface "Nelmio\Alice\Definition\FlagInterface" not found in /home/flighto/e-commerce/vendor/nelmio/alice/src/Definition/Flag/OptionalFlag.php:19 Stack trace: #0 {main} thrown in /home/flighto/e-commerce/vendor/nelmio/alice/src/Definition/Flag/OptionalFlag.php on line 19