Fatal error: Uncaught Error: Class "PHPUnit_Framework_TestCase" not found in C:\laragon\www\siesicis\ovh-sms\vendor\symfony\debug\Tests\ExceptionHandlerTest.php:21 Stack trace: #0 {main} thrown in C:\laragon\www\siesicis\ovh-sms\vendor\symfony\debug\Tests\ExceptionHandlerTest.php on line 21