crontab – Request does not match any route, when try save order in cron job

I have a problem when trying to modify an order through a cronjob this code works perfectly, but when executing it inside the cronjob it indicates that error “Request does not match any route”

namespace VendorModuleCron;
class cronTest
    public function __construct(
    ) {
    public function execute()
        $objectManager = MagentoFrameworkAppObjectManager::getInstance();
        $orderId = 8;
        $order = $objectManager->get('MagentoSalesModelOrder')->load($orderId);

if I use this same code in an observer for example, it works without any problem