`Action::$error` has wrong type (only `|null`) hints: * https://github.com/LKDevelopment/hetzner-cloud-php-sdk/blob/8cff31f89cd625b8b22c20d8d733a550a6119c0c/src/Models/Actions/Action.php#L46 * https://github.com/LKDevelopment/hetzner-cloud-php-sdk/blob/8cff31f89cd625b8b22c20d8d733a550a6119c0c/src/Models/Actions/Action.php#L60 This causes issues with tools like e.g. PHPStan.