Fatal error: Uncaught Error: Class "PHPUnit_Framework_TestCase" not found in /home/emaillis/emailapi.emaillistus.com/vendor/sendinblue/api-v3-sdk/test/Model/CreateProductModelTest.php:41 Stack trace: #0 {main} thrown in /home/emaillis/emailapi.emaillistus.com/vendor/sendinblue/api-v3-sdk/test/Model/CreateProductModelTest.php on line 41