Fatal error: Uncaught Error: Class "PHPUnit\Framework\TestCase" not found in /home/flighto/e-commerce/vendor/sylius/paypal-plugin/tests/Unit/PayPalGatewayFactoryTest.php:22 Stack trace: #0 {main} thrown in /home/flighto/e-commerce/vendor/sylius/paypal-plugin/tests/Unit/PayPalGatewayFactoryTest.php on line 22