Warning: Unsupported declare 'strict_types' in C:\Apache24\htdocs\drupal\core\modules\system\tests\themes\test_theme_settings\theme-settings.php on line 8

Parse error: syntax error, unexpected ':', expecting '{' in C:\Apache24\htdocs\drupal\core\modules\system\tests\themes\test_theme_settings\theme-settings.php on line 16