Attempt to assign property "address_country" on true

-- HikaShop version -- : 6.5.0
-- Joomla version -- : 6.1.1

Hi,

I use the fedex plugin but it is not showing in the checkout.
When i activate Debug i see this error. Can you help us to this?

Kind regards,
Jeroen Moolenschot
www.joomill.com

Attempt to assign property "address_country" on true

Home Page
Call Stack
# Function Location
1 () JROOT/plugins/hikashopshipping/fedex2/fedex2.php:365
2 plgHikashopshippingFedEx2->_fedex_request_rates() JROOT/plugins/hikashopshipping/fedex2/fedex2.php:585
3 plgHikashopshippingFedEx2->_getShippingMethods() JROOT/plugins/hikashopshipping/fedex2/fedex2.php:533
4 plgHikashopshippingFedEx2->_getBestMethods() JROOT/plugins/hikashopshipping/fedex2/fedex2.php:236
5 plgHikashopshippingFedEx2->onShippingDisplay() JROOT/administrator/components/com_hikashop/pluginCompatJ4.php:53
6 hikashopJoomlaPlugin->__call() JROOT/libraries/vendor/joomla/event/src/Dispatcher.php:454
7 Joomla\Event\Dispatcher->dispatch() JROOT/libraries/src/Application/EventAware.php:111
8 Joomla\CMS\Application\WebApplication->triggerEvent() JROOT/administrator/components/com_hikashop/classes/shipping.php:428
9 hikashopShippingClass->getShippings() JROOT/administrator/components/com_hikashop/helpers/checkout/shipping.php:272
10 hikashopCheckoutShippingHelper->applyAddressPreview() JROOT/administrator/components/com_hikashop/helpers/checkout/shipping.php:314
11 hikashopCheckoutShippingHelper->display() JROOT/components/com_hikashop/views/checkout/view.html.php:255
12 CheckoutViewCheckout->showblock() JROOT/components/com_hikashop/views/checkout/view.html.php:54
13 CheckoutViewCheckout->display() JROOT/libraries/src/MVC/Controller/BaseController.php:697
14 Joomla\CMS\MVC\Controller\BaseController->display() JROOT/administrator/components/com_hikashop/helpers/helper.php:2954
15 hikashopController->display() JROOT/components/com_hikashop/controllers/checkout.php:67
16 checkoutController->display() JROOT/components/com_hikashop/controllers/checkout.php:251
17 checkoutController->{closure:checkoutController::showblock():250}() JROOT/administrator/components/com_hikashop/helpers/helper.php:1998
18 hikashop_getHTML() JROOT/components/com_hikashop/controllers/checkout.php:250
19 checkoutController->showblock() JROOT/libraries/src/MVC/Controller/BaseController.php:730
20 Joomla\CMS\MVC\Controller\BaseController->execute() JROOT/administrator/components/com_hikashop/helpers/helper.php:2932
21 hikashopController->execute() JROOT/components/com_hikashop/hikashop.php:89
22 require_once() JROOT/libraries/src/Dispatcher/LegacyComponentDispatcher.php:71
23 Joomla\CMS\Dispatcher\LegacyComponentDispatcher::{closure:Joomla\CMS\Dispatcher\LegacyComponentDispatcher::dispatch():70}() JROOT/libraries/src/Dispatcher/LegacyComponentDispatcher.php:73
24 Joomla\CMS\Dispatcher\LegacyComponentDispatcher->dispatch() JROOT/libraries/src/Component/ComponentHelper.php:361
25 Joomla\CMS\Component\ComponentHelper::renderComponent() JROOT/libraries/src/Application/SiteApplication.php:218
26 Joomla\CMS\Application\SiteApplication->dispatch() JROOT/libraries/src/Application/SiteApplication.php:272
27 Joomla\CMS\Application\SiteApplication->doExecute() JROOT/libraries/src/Application/CMSApplication.php:320
28 Joomla\CMS\Application\CMSApplication->execute() JROOT/includes/app.php:58
29 require_once() JROOT/index.php:51