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