Fatal error: Uncaught Error: Class 'PHPUnit\Framework\TestCase' not found in /home/kubalos2/public_html/testtestowy/vendor/phar-io/manifest/tests/values/LibraryTest.php:19 Stack trace: #0 {main} thrown in /home/kubalos2/public_html/testtestowy/vendor/phar-io/manifest/tests/values/LibraryTest.php on line 19