Fatal error: Uncaught Error: Class "PHP_CodeSniffer\Tests\Core\Config\AbstractRealConfigTestCase" not found in C:\Apache24\htdocs\Quantum\vendor\squizlabs\php_codesniffer\tests\Core\Runner\AbstractRunnerTestCase.php:16 Stack trace: #0 {main} thrown in C:\Apache24\htdocs\Quantum\vendor\squizlabs\php_codesniffer\tests\Core\Runner\AbstractRunnerTestCase.php on line 16