Warning: Unsupported declare 'strict_types' in C:\Apache24\htdocs\drupal\core\lib\Drupal\Core\Config\Action\Exists.php on line 4

Parse error: syntax error, unexpected 'Exists' (T_STRING) in C:\Apache24\htdocs\drupal\core\lib\Drupal\Core\Config\Action\Exists.php on line 14