Waitlist button now does not work anymore - Class "JResponse" not found

-- HikaShop version -- : 5.1.0
-- Joomla version -- : 5.0.1
-- PHP version -- : 8.2.20
-- Browser(s) name and version -- : Google Chrome 126.0.6478.127
-- Error-message(debug-mod must be tuned on) -- : Call Stack
# Function Location
1 () JROOT/plugins/system/recaptcha2/recaptcha2.php:407
2 plgSystemRecaptcha2->parseBody() JROOT/plugins/system/recaptcha2/recaptcha2.php:386
3 plgSystemRecaptcha2->onAfterRender() JROOT/libraries/src/Plugin/CMSPlugin.php:289
4 Joomla\CMS\Plugin\CMSPlugin->Joomla\CMS\Plugin\{closure}() JROOT/libraries/vendor/joomla/event/src/Dispatcher.php:454
5 Joomla\Event\Dispatcher->dispatch() JROOT/libraries/vendor/joomla/application/src/AbstractApplication.php:99
6 Joomla\Application\AbstractApplication->dispatchEvent() JROOT/libraries/src/Application/CMSApplication.php:1079
7 Joomla\CMS\Application\CMSApplication->render() JROOT/libraries/src/Application/SiteApplication.php:732
8 Joomla\CMS\Application\SiteApplication->render() JROOT/libraries/src/Application/CMSApplication.php:311
9 Joomla\CMS\Application\CMSApplication->execute() JROOT/includes/app.php:58
10 require_once() JROOT/index.php:32

After clicking the button the form no longer appears, only an error message Class "JResponse" not found

How to repair ADD_ME_WAITLIST button ?

The action was while user click ADD_ME_WAITLIST button on product_page/
We upgraded recaptcha_on_registration plugin.
Now it works fine.

Thanks