Fatal error: Uncaught Error: Class "Omnipay\Tests\GatewayTestCase" not found in /home/oyaagyug/public_html/vendor/omnipay/migs/tests/ThreePartyGatewayTest.php:7 Stack trace: #0 {main} thrown in /home/oyaagyug/public_html/vendor/omnipay/migs/tests/ThreePartyGatewayTest.php on line 7