Fatal error: Uncaught Error: Class "SmsapiTestCase" not found in /home/gyannewsoftware/public_html/school6_EduFirm/vendor/smsapi.com/php-client/test/Integration/PhonebookTest.php:3 Stack trace: #0 {main} thrown in /home/gyannewsoftware/public_html/school6_EduFirm/vendor/smsapi.com/php-client/test/Integration/PhonebookTest.php on line 3