Fatal error: Uncaught Error: Class "PHPUnit\Framework\TestCase" not found in C:\SHC\xampp\htdocs\shc_mobile_backend\vendor\diablomedia\zendframework1-mail\tests\Zend\Mail\ImapTest.php:32 Stack trace: #0 {main} thrown in C:\SHC\xampp\htdocs\shc_mobile_backend\vendor\diablomedia\zendframework1-mail\tests\Zend\Mail\ImapTest.php on line 32