Fatal error: Uncaught Error: Class "PhpSpec\ObjectBehavior" not found in /home/flighto/e-commerce/vendor/sylius/fixtures-bundle/spec/Listener/ListenerRegistrySpec.php:21 Stack trace: #0 {main} thrown in /home/flighto/e-commerce/vendor/sylius/fixtures-bundle/spec/Listener/ListenerRegistrySpec.php on line 21