Fatal error: Uncaught Error: Class 'Omnipay\Tests\TestCase' not found in /home/app/htdocs/ninja1/vendor/omnipay/authorizenet/tests/Message/DPMCompleteRequestTest.php:11 Stack trace: #0 {main} thrown in /home/app/htdocs/ninja1/vendor/omnipay/authorizenet/tests/Message/DPMCompleteRequestTest.php on line 11