Fatal error: Uncaught Error: Class "PhpSpec\ObjectBehavior" not found in /home/flighto/e-commerce/vendor/sylius/registry/spec/NonExistingServiceExceptionSpec.php:18 Stack trace: #0 {main} thrown in /home/flighto/e-commerce/vendor/sylius/registry/spec/NonExistingServiceExceptionSpec.php on line 18