Warning: Unsupported declare 'strict_types' in C:\Apache24\htdocs\drupal\core\modules\system\tests\src\Functional\Form\StubForm.php on line 3

Fatal error: Class 'Drupal\Core\Form\FormBase' not found in C:\Apache24\htdocs\drupal\core\modules\system\tests\src\Functional\Form\StubForm.php on line 15