Fatal error: Uncaught Error: Class "PHP_CodeSniffer\Tests\Core\AbstractMethodUnitTest" not found in C:\xampp\htdocs\snipe-it\vendor\squizlabs\php_codesniffer\tests\Core\File\IsReferenceTest.php:14 Stack trace: #0 {main} thrown in C:\xampp\htdocs\snipe-it\vendor\squizlabs\php_codesniffer\tests\Core\File\IsReferenceTest.php on line 14