Notice: Undefined property when installing Hikaserial

-- HikaShop version -- : 4.2.2
-- HikaSerial version -- : 3.0.1
-- Joomla version -- : 3.9.14
-- PHP version -- : 7.2
-- Error-message(debug-mod must be tuned on) -- : Notice: Undefined property: userViewUser::$ctrl in C:\wamp64\www\diantum\plugins\hikashoppayment\paypalexpress\paypalexpress.php on line 581

When installing Hikaserial I get this Notice error. I get also the same message in the applicacion when using the Hikashop functionality (Getting a list o existing orders).

I get this error in the localhost environment as I still didn´t install it in the server.

( ! ) Notice: Undefined property: userViewUser::$ctrl in C:\wamp64\www\diantum\plugins\hikashoppayment\paypalexpress\paypalexpress.php on line 581
Call Stack
# Time Memory Function Location
1 0.0003 404512 {main}( ) ...\index.php:0
2 0.0371 1498232 Joomla\CMS\Application\SiteApplication->execute( ) ...\index.php:49
3 0.0371 1498232 Joomla\CMS\Application\SiteApplication->doExecute( ) ...\CMSApplication.php:196
4 0.0890 2885864 Joomla\CMS\Application\SiteApplication->dispatch( ) ...\SiteApplication.php:233
5 0.0893 2889184 Joomla\CMS\Component\ComponentHelper::renderComponent( ) ...\SiteApplication.php:194
6 0.0919 3463728 Joomla\CMS\Component\ComponentHelper::executeComponent( ) ...\ComponentHelper.php:377
7 0.0919 3481232 require_once( 'C:\wamp64\www\mydomain\components\com_hikashop\hikashop.php' ) ...\ComponentHelper.php:402
8 0.0996 3840288 userController->execute( ) ...\hikashop.php:92
9 0.0996 3840288 userController->execute( ) ...\helper.php:1983
10 0.0996 3840288 userController->cpanel( ) ...\BaseController.php:710
11 0.0996 3840288 userController->display( ) ...\user.php:193
12 0.1002 3850272 userController->display( ) ...\helper.php:2005
13 0.1002 3850280 userViewUser->display( ) ...\BaseController.php:672
14 0.1302 4845264 userViewUser->display( ) ...\view.html.php:22
15 0.1302 4845664 Joomla\CMS\Application\SiteApplication->triggerEvent( ) ...\helper.php:2231
16 0.1302 4845664 JEventDispatcher->trigger( ) ...\BaseApplication.php:108
17 0.1303 4848552 plgHikashoppaymentPaypalExpress->update( ) ...\dispatcher.php:160
18 0.1303 4848552 plgHikashoppaymentPaypalExpress->onHikashopBeforeDisplayView( ) ...\event.php:70

Hello,

Firstly, can you try to install it via FTP like explained though our documentation :
www.hikashop.com/support/documentation/5...-how-to-install.html

Thank you !
Kind regards,
Mohamed.

Hello, the error disappeared when deactivating the pluging User-Points Hikaserial Generation Pluging.
But again, this happened in the localhost environment. The server worked well.
Thanks so much, anyhow.
Regards
Jorge