Message d'erreur a la validation du panier

-- url of the page with the problem -- : www.gabi77.org/
-- HikaShop version -- : 5.0.2
-- Joomla version -- : 4
-- PHP version -- : 8.2.10

Bonjour,

Impossible de valider le panier j'ai ce message d'erreur... Pouvez-vous m'aider ?... merci

Call to undefined method Joomla\CMS\Application\SiteApplication::isAdmin()

Page d'accueil
Call stack
# Function Location
1 () JROOT/media/com_hikashop/mail/order_creation_notification.preload.modified.php:62
2 include() JROOT/administrator/components/com_hikashop/classes/mail.php:362
3 hikashopMailClass->loadEmail() JROOT/administrator/components/com_hikashop/classes/mail.php:31
4 hikashopMailClass->get() JROOT/administrator/components/com_hikashop/classes/order.php:2085
5 hikashopOrderClass->loadOrderNotification() JROOT/administrator/components/com_hikashop/classes/order.php:439
6 hikashopOrderClass->save() JROOT/administrator/components/com_hikashop/classes/order.php:910
7 hikashopOrderClass->createFromCart() JROOT/components/com_hikashop/controllers/checkout.php:699
8 checkoutController->confirm() JROOT/libraries/src/MVC/Controller/BaseController.php:693
9 Joomla\CMS\MVC\Controller\BaseController->execute() JROOT/administrator/components/com_hikashop/helpers/helper.php:2554
10 hikashopController->execute() JROOT/components/com_hikashop/hikashop.php:88
11 require_once() JROOT/libraries/src/Dispatcher/LegacyComponentDispatcher.php:71
12 Joomla\CMS\Dispatcher\LegacyComponentDispatcher::Joomla\CMS\Dispatcher\{closure}() JROOT/libraries/src/Dispatcher/LegacyComponentDispatcher.php:73
13 Joomla\CMS\Dispatcher\LegacyComponentDispatcher->dispatch() JROOT/libraries/src/Component/ComponentHelper.php:361
14 Joomla\CMS\Component\ComponentHelper::renderComponent() JROOT/libraries/src/Application/SiteApplication.php:208
15 Joomla\CMS\Application\SiteApplication->dispatch() JROOT/libraries/src/Application/SiteApplication.php:249
16 Joomla\CMS\Application\SiteApplication->doExecute() JROOT/libraries/src/Application/CMSApplication.php:293
17 Joomla\CMS\Application\CMSApplication->execute() JROOT/includes/app.php:61
18 require_once() JROOT/index.php:32