Fatal error: Uncaught Error: Class 'PHPUnit\Framework\TestCase' not found in /home/users/00/3c/21/home/www/vendor/maennchen/zipstream-php/test/BigintTest.php:10 Stack trace: #0 {main} thrown in /home/users/00/3c/21/home/www/vendor/maennchen/zipstream-php/test/BigintTest.php on line 10