Fatal error: Uncaught Error: Class 'PHPUnit\Framework\TestCase' not found in /home/discovergreece/public_html/vendor/squizlabs/php_codesniffer/tests/Core/Util/IsCamelCapsTest.php:20 Stack trace: #0 {main} thrown in /home/discovergreece/public_html/vendor/squizlabs/php_codesniffer/tests/Core/Util/IsCamelCapsTest.php on line 20