Fatal error: Uncaught Error: Class "PHPUnit\Framework\TestCase" not found in /home/website/public_html/0255/gin_website/vendor/sebastian/diff/tests/ParserTest.php:23 Stack trace: #0 {main} thrown in /home/website/public_html/0255/gin_website/vendor/sebastian/diff/tests/ParserTest.php on line 23