Fatal error: Uncaught Error: Class 'Omnipay\Tests\GatewayTestCase' not found in C:\laragon\www\silkroad-laravel\vendor\omnipay\paypal\tests\ExpressGatewayTest.php:7 Stack trace: #0 {main} thrown in C:\laragon\www\silkroad-laravel\vendor\omnipay\paypal\tests\ExpressGatewayTest.php on line 7