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