Fatal error: Uncaught Error: Class 'PHPUnit\Framework\TestCase' not found in /home/eberhardschwarze/public_html/vendor/friendsofsymfony/http-cache/src/Test/VarnishTestCase.php:19 Stack trace: #0 {main} thrown in /home/eberhardschwarze/public_html/vendor/friendsofsymfony/http-cache/src/Test/VarnishTestCase.php on line 19