Fatal error: Uncaught Error: Class "PHPUnit_Framework_TestCase" not found in /home/emaillis/emailapi.emaillistus.com/vendor/sendinblue/api-v3-sdk/test/Api/FilesApiTest.php:43 Stack trace: #0 {main} thrown in /home/emaillis/emailapi.emaillistus.com/vendor/sendinblue/api-v3-sdk/test/Api/FilesApiTest.php on line 43