Customer Cart View suddenly gives error

-- HikaShop version -- : 4.6.2
-- Joomla version -- : 4.2.25
-- PHP version -- : 8.0.25
-- Browser(s) name and version -- : Any
-- Error-message(debug-mod must be tuned on) -- : errorerror - Uncaught Throwable of type Error thrown with message "Attempt to assign property "zone_code_2" on null". Stack trace: #0 [ROOT]/plugins/hikashopshipping/ups/ups.php(440): plgHikashopshippingUPS->_getShippingMethods() #1 [ROOT]/plugins/hikashopshipping/ups/ups.php(154): plgHikashopshippingUPS->_getBestMethods() #2 [ROOT]/libraries/src/Plugin/CMSPlugin.php(279): plgHikashopshippingUPS->onShippingDisplay() #3 [ROOT]/libraries/vendor/joomla/event/src/Dispatcher.php(486): Joomla\CMS\Plugin\CMSPlugin->Joomla\CMS\Plugin\{closure}() #4 [ROOT]/libraries/src/Application/EventAware.php(107): Joomla\Event\Dispatcher->dispatch() #5 [ROOT]/administrator/components/com_hikashop/classes/shipping.php(434): Joomla\CMS\Application\WebApplication->triggerEvent() #6 [ROOT]/administrator/components/com_hikashop/classes/cart.php(1373): hikashopShippingClass->getShippings() #7 [ROOT]/administrator/components/com_hikashop/views/cart/view.html.php(96): hikashopCartClass->getFullCart() #8 [ROOT]/administrator/components/com_hikashop/views/cart/view.html.php(20): CartViewCart->listing() #9 [ROOT]/libraries/src/MVC/Controller/BaseController.php(639): CartViewCart->display() #10 [ROOT]/administrator/components/com_hikashop/helpers/helper.php(2424): Joomla\CMS\MVC\Controller\BaseController->display() #11 [ROOT]/administrator/components/com_hikashop/helpers/helper.php(2141): hikashopController->display() #12 [ROOT]/libraries/src/MVC/Controller/BaseController.php(672): hikashopController->listing() #13 [ROOT]/administrator/components/com_hikashop/helpers/helper.php(2402): Joomla\CMS\MVC\Controller\BaseController->execute() #14 [ROOT]/administrator/components/com_hikashop/hikashop.php(73): hikashopController->execute() #15 [ROOT]/libraries/src/Dispatcher/LegacyComponentDispatcher.php(71): require_once('...') #16 [ROOT]/libraries/src/Dispatcher/LegacyComponentDispatcher.php(73): Joomla\CMS\Dispatcher\LegacyComponentDispatcher::Joomla\CMS\Dispatcher\{closure}() #17 [ROOT]/libraries/src/Component/ComponentHelper.php(355): Joomla\CMS\Dispatcher\LegacyComponentDispatcher->dispatch() #18 [ROOT]/libraries/src/Application/AdministratorApplication.php(143): Joomla\CMS\Component\ComponentHelper::renderComponent() #19 [ROOT]/libraries/src/Application/AdministratorApplication.php(186): Joomla\CMS\Application\AdministratorApplication->dispatch() #20 [ROOT]/libraries/src/Application/CMSApplication.php(294): Joomla\CMS\Application\AdministratorApplication->doExecute() #21 [ROOT]/administrator/includes/app.php(61): Joomla\CMS\Application\CMSApplication->execute() #22 [ROOT]/administrator/index.php(32): require_once('...') #23 {main}

Not sure if this is a shipping plugin error or a Customer -> Cart error.

I was reviewing some cart entries fine and then suddenly started getting this error:

An error has occurred.

    0 Attempt to assign property "zone_code_2" on null