[Skip to main content](#vessel-content) # 0 Call to undefined method Joomla\\CMS\\Application\\SiteApplication::isAdmin() ## - **[WJ](/forum/user/39643-wj "View WJ's Profile")** - [![WJ's Avatar](https://www.hikashop.com/media/kunena/core/svg/person.svg)](/forum/user/39643-wj "View WJ's Profile") Topic Author - [ Offline](/forum/user/39643-wj) Less More - Posts: 50 - Thank you received: 4 - - 3 years 7 months ago - 3 years 7 months ago [\#350442](#350442) by [WJ](/forum/user/39643-wj "View WJ's Profile") *[0 Call to undefined method Joomla\\CMS\\Application\\SiteApplication::isAdmin()](/forum/25-install-update/906146-0-call-to-undefined-method-joomla-cms-application-siteapplication-isadmin#350442 "-- HikaShop version -- : 4.7.2. -- Joomla version -- : 4.2.9 -- PHP version -- : 8.0.27 -- Browser(s) name and version -- : Brave latest -- Error-message(debug-mod must be tuned on) -- : 0 Call to undefined method Joomla\CMS\Application\SiteApplication::isAdmin() 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:2075 5 hikashopOrderClass->loadOrderNotification() JROOT/administrator/components/com_hikashop/classes/order.php:442 6 hikashopOrderClass->save() JROOT/administrator/components/com_hikashop/classes/order.php:913 7 hikashopOrderClass->createFromCart() JROOT/components/com_hikashop/controllers/checkout.php:674 8 checkoutController->confirm() JROOT/libraries/src/MVC/Controller/BaseController.php:672 9 Joomla\CMS\MVC\Controller\BaseController->execute() JROOT/administrator/components/com_hikashop/helpers/helper.php:2437 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:355 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:294 17 Joomla\CMS\Application\CMSApplication->execute() JROOT/includes/app.php:61 18 require_once() JROOT/index.php:32 Hello support, I have made the upgrade to joomla 4 all seem to work fine. But in the last step in the checkout, the moment leaving the website to the payment provider i got an error. 0 Call to undefined method Joomla\CMS\Application\SiteApplication::isAdmin() I use the mollie skysider plugin. I don't know how to solve this. Thanks in advance regards WJ")* was created by *[WJ](/forum/user/39643-wj "View WJ's Profile")* -- HikaShop version -- : 4.7.2. -- Joomla version -- : 4.2.9 -- PHP version -- : 8.0.27 -- Browser(s) name and version -- : Brave latest -- Error-message(debug-mod must be tuned on) -- : 0 Call to undefined method Joomla\CMS\Application\SiteApplication::isAdmin() 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:2075 5 hikashopOrderClass->loadOrderNotification() JROOT/administrator/components/com_hikashop/classes/order.php:442 6 hikashopOrderClass->save() JROOT/administrator/components/com_hikashop/classes/order.php:913 7 hikashopOrderClass->createFromCart() JROOT/components/com_hikashop/controllers/checkout.php:674 8 checkoutController->confirm() JROOT/libraries/src/MVC/Controller/BaseController.php:672 9 Joomla\CMS\MVC\Controller\BaseController->execute() JROOT/administrator/components/com_hikashop/helpers/helper.php:2437 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:355 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:294 17 Joomla\CMS\Application\CMSApplication->execute() JROOT/includes/app.php:61 18 require_once() JROOT/index.php:32 Hello support, I have made the upgrade to joomla 4 all seem to work fine. But in the last step in the checkout, the moment leaving the website to the payment provider i got an error. 0 Call to undefined method Joomla\CMS\Application\SiteApplication::isAdmin() I use the mollie skysider plugin. I don't know how to solve this. Thanks in advance regards WJ Last edit: 3 years 7 months ago by [WJ](/forum/user/39643-wj "View WJ's Profile"). Please [Log in](/login?return=aHR0cHM6Ly93d3cuaGlrYXNob3AuY29tL2ZvcnVtLzI1LWluc3RhbGwtdXBkYXRlLzkwNjE0Ni0wLWNhbGwtdG8tdW5kZWZpbmVkLW1ldGhvZC1qb29tbGEtY21zLWFwcGxpY2F0aW9uLXNpdGVhcHBsaWNhdGlvbi1pc2FkbWluP3RtcGw9bWFya2Rvd24=) or [Create an account](/register) to join the conversation. - **[WJ](/forum/user/39643-wj "View WJ's Profile")** - [![WJ's Avatar](https://www.hikashop.com/media/kunena/core/svg/person.svg)](/forum/user/39643-wj "View WJ's Profile") Topic Author - [ Offline](/forum/user/39643-wj) Less More - Posts: 50 - Thank you received: 4 - - 3 years 7 months ago [\#350444](#350444) by [WJ](/forum/user/39643-wj "View WJ's Profile") Replied by *[WJ](/forum/user/39643-wj "View WJ's Profile")* on topic *[0 Call to undefined method Joomla\\CMS\\Application\\SiteApplication::isAdmin()](/forum/25-install-update/906146-0-call-to-undefined-method-joomla-cms-application-siteapplication-isadmin#350444 "-- HikaShop version -- : 4.7.2. -- Joomla version -- : 4.2.9 -- PHP version -- : 8.0.27 -- Browser(s) name and version -- : Brave latest -- Error-message(debug-mod must be tuned on) -- : 0 Call to undefined method Joomla\CMS\Application\SiteApplication::isAdmin() 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:2075 5 hikashopOrderClass->loadOrderNotification() JROOT/administrator/components/com_hikashop/classes/order.php:442 6 hikashopOrderClass->save() JROOT/administrator/components/com_hikashop/classes/order.php:913 7 hikashopOrderClass->createFromCart() JROOT/components/com_hikashop/controllers/checkout.php:674 8 checkoutController->confirm() JROOT/libraries/src/MVC/Controller/BaseController.php:672 9 Joomla\CMS\MVC\Controller\BaseController->execute() JROOT/administrator/components/com_hikashop/helpers/helper.php:2437 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:355 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:294 17 Joomla\CMS\Application\CMSApplication->execute() JROOT/includes/app.php:61 18 require_once() JROOT/index.php:32 Hello support, I have made the upgrade to joomla 4 all seem to work fine. But in the last step in the checkout, the moment leaving the website to the payment provider i got an error. 0 Call to undefined method Joomla\CMS\Application\SiteApplication::isAdmin() I use the mollie skysider plugin. I don't know how to solve this. Thanks in advance regards WJ")* I found the solution for this error. There were some overides in the SYSTEM -> E-mails. When removing those al seem to work fine. Sorry for bothering. Regards Wim The following user(s) said Thank You: [huwhuw](/forum/user/35272-huwhuw "View huwhuw's Profile") Please [Log in](/login?return=aHR0cHM6Ly93d3cuaGlrYXNob3AuY29tL2ZvcnVtLzI1LWluc3RhbGwtdXBkYXRlLzkwNjE0Ni0wLWNhbGwtdG8tdW5kZWZpbmVkLW1ldGhvZC1qb29tbGEtY21zLWFwcGxpY2F0aW9uLXNpdGVhcHBsaWNhdGlvbi1pc2FkbWluP3RtcGw9bWFya2Rvd24=) or [Create an account](/register) to join the conversation. 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