Fatal error: Uncaught Error: Class "PHPUnit\Framework\TestCase" not found in I:\www\pvcUtils\vendor\squizlabs\php_codesniffer\tests\Core\IsCamelCapsTest.php:15 Stack trace: #0 {main} thrown in I:\www\pvcUtils\vendor\squizlabs\php_codesniffer\tests\Core\IsCamelCapsTest.php on line 15