Paypal Plus Payment Plugin error message

-- HikaShop version -- : HikaShop Business: 4.4.3 & HikaMarket Multivendor: 4.0.0
-- Joomla version -- : 4.0.3
-- PHP version -- : 7.4.23
-- Browser(s) name and version -- : Google Chrome
-- Error-message(debug-mod must be tuned on) -- : Call to undefined method Joomla \ CMS \ Application \ AdministratorApplication :: isAdmin ()
Call stack
# Function Location
1 () JROOT / plugins / hikashoppayment / paypalplus / paypalplus.php: 557
2 plgHikashoppaymentPaypalplus-> onHikashopBeforeDisplayView () JROOT / libraries / src / Plugin / CMSPlugin.php: 285
3 Joomla \ CMS \ Plugin \ CMSPlugin-> Joomla \ CMS \ Plugin \ {closure} () JROOT / libraries / vendor / joomla / event / src / Dispatcher.php: 486
4 Joomla \ Event \ Dispatcher-> dispatch () JROOT / libraries / src / Application / EventAware.php: 111
5 Joomla \ CMS \ Application \ WebApplication-> triggerEvent () JROOT / administrator / components / com_hikashop / helpers / helper.php: 2529
6 hikashopView-> display () JROOT / administrator / components / com_hikashop / views / plugins / view.html.php: 23
7 PluginsViewPlugins-> display () JROOT / libraries / src / MVC / Controller / BaseController.php: 692
8 Joomla \ CMS \ MVC \ Controller \ BaseController-> display () JROOT / administrator / components / com_hikashop / helpers / helper.php: 2302
9 hikashopController-> display () JROOT / administrator / components / com_hikashop / controllers / plugins.php: 159
10 PluginsController-> listing () JROOT / libraries / src / MVC / Controller / BaseController.php: 730
11 Joomla \ CMS \ MVC \ Controller \ BaseController-> execute () JROOT / administrator / components / com_hikashop / helpers / helper.php: 2280
12 hikashopController-> execute () JROOT / administrator / components / com_hikashop / hikashop.php: 75
13 require_once () JROOT / libraries / src / Dispatcher / LegacyComponentDispatcher.php: 69
14 Joomla \ CMS \ Dispatcher \ LegacyComponentDispatcher :: Joomla \ CMS \ Dispatcher \ {closure} () JROOT / libraries / src / Dispatcher / LegacyComponentDispatcher.php: 71
15 Joomla \ CMS \ Dispatcher \ LegacyComponentDispatcher-> dispatch () JROOT / libraries / src / Component / ComponentHelper.php: 389
16 Joomla \ CMS \ Component \ ComponentHelper :: renderComponent () JROOT / libraries / src / Application / AdministratorApplication.php: 143
17 Joomla \ CMS \ Application \ AdministratorApplication-> dispatch () JROOT / libraries / src / Application / AdministratorApplication.php: 186
18 Joomla \ CMS \ Application \ AdministratorApplication-> doExecute () JROOT / libraries / src / Application / CMSApplication.php: 278
19 Joomla \ CMS \ Application \ CMSApplication-> execute () JROOT / administrator / includes / app.php: 63
20 require_once () JROOT / administrator / index.php: 32

Hello Support-Team,
I have the following problem:

When I activate the Hikashop Paypal Plus Payment Plugin, I can no longer access the payment methods in the backend. The following error message appears:

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

The same error message appears in the frontend.
Can you help me? (I'm not a programmer)

Thanks very much

Hello,

Thank you for your feedback, we were not able to reproduce that issue on our end but we have optimized the code of the last PayPal plus payment method so that it will work properly with Joomla 4, so can you download the last version of PayPal plus through Hikashop's website, install it and test it again ? Thank you.

If you're still having an issue on your website, you can directly contact us via tsukidev.contact[at]gmail[dot]com and send us a temporary access to your website so that we can directly reproduce and debug it for you.

Kind regards,
Mohamed.
Tsuki Dev
tsukidev.contact[at]gmail[dot]com

Hi Mohamed,
everything went great and works again.
Thanks very much.

Kind regards
Stergios