Fatal error: Uncaught Error: Class "PHPUnit\Framework\TestCase" not found in /home/trairtil/public_html/vendor/phar-io/manifest/tests/exceptions/ManifestDocumentLoadingExceptionTest.php:18 Stack trace: #0 {main} thrown in /home/trairtil/public_html/vendor/phar-io/manifest/tests/exceptions/ManifestDocumentLoadingExceptionTest.php on line 18