Warning: Unsupported declare 'strict_types' in C:\Apache24\htdocs\drupal\core\modules\package_manager\src\Event\PreApplyEvent.php on line 3

Parse error: syntax error, unexpected 'readonly' (T_STRING), expecting variable (T_VARIABLE) in C:\Apache24\htdocs\drupal\core\modules\package_manager\src\Event\PreApplyEvent.php on line 21