Fatal error: Uncaught Error: Class "PHPUnit\Framework\TestCase" not found in /home/melihata/public_html/vendor/tgalopin/html-sanitizer/tests/AbstractSanitizerTest.php:18 Stack trace: #0 {main} thrown in /home/melihata/public_html/vendor/tgalopin/html-sanitizer/tests/AbstractSanitizerTest.php on line 18