Fatal error: Uncaught Error: Class 'PHPUnit\Framework\TestCase' not found in /var/www/app/appregwebservice/vendor/maennchen/zipstream-php/test/BigintTest.php:11 Stack trace: #0 {main} thrown in /var/www/app/appregwebservice/vendor/maennchen/zipstream-php/test/BigintTest.php on line 11