Fatal error: Uncaught Error: Class "PHPUnit_Framework_TestCase" not found in C:\www\api\vendor\sendinblue\api-v3-sdk\test\Api\AttributesApiTest.php:43 Stack trace: #0 {main} thrown in C:\www\api\vendor\sendinblue\api-v3-sdk\test\Api\AttributesApiTest.php on line 43