Fatal error: Uncaught Error: Class "PHPUnit\Framework\TestCase" not found in /itss/home/arcelormittal/public_html/vendor/maennchen/zipstream-php/test/BigintTest.php:10 Stack trace: #0 {main} thrown in /itss/home/arcelormittal/public_html/vendor/maennchen/zipstream-php/test/BigintTest.php on line 10