Fatal error: Uncaught Error: Class "PHPUnit\Framework\TestCase" not found in E:\xampp\htdocs\stms\vendor\maennchen\zipstream-php\test\LocalFileHeaderTest.php:12 Stack trace: #0 {main} thrown in E:\xampp\htdocs\stms\vendor\maennchen\zipstream-php\test\LocalFileHeaderTest.php on line 12