Question URLs for K6 RSS feeds

Hi, what would the URL be for a K6.0 RSS feed, for example the latest posts in all categories. In K5 I use forum/recent/posts/?format=feed&type=rss/ but this doesn't work with my Joomla 4 development site  - I get a 404 (see below).

Am I using a correct url?

<error>
<code>404</code>
<message>
View not found [name, type, prefix]: topics, feed, site
</message>
<trace>
#0 \XAMPP2\htdocs\pgc\libraries\kunena\src\Controller\KunenaController.php(418): Joomla\CMS\MVC\Controller\BaseController->getView('topics', 'feed', 'site', Array) #1 \XAMPP2\htdocs\pgc\libraries\kunena\src\Controller\KunenaController.php(353): Kunena\Forum\Libraries\Controller\KunenaController->display() #2 \XAMPP2\htdocs\pgc\libraries\kunena\src\Controller\KunenaController.php(244): Kunena\Forum\Libraries\Controller\KunenaController->executeTask('display') #3 \XAMPP2\htdocs\pgc\components\com_kunena\src\Dispatcher\Dispatcher.php(113): Kunena\Forum\Libraries\Controller\KunenaController->execute('display') #4 \XAMPP2\htdocs\pgc\libraries\src\Component\ComponentHelper.php(355): Kunena\Forum\Site\Dispatcher\Dispatcher->dispatch() #5 \XAMPP2\htdocs\pgc\libraries\src\Application\SiteApplication.php(200): Joomla\CMS\Component\ComponentHelper::renderComponent('com_kunena') #6 \XAMPP2\htdocs\pgc\libraries\src\Application\SiteApplication.php(241): Joomla\CMS\Application\SiteApplication->dispatch() #7 \XAMPP2\htdocs\pgc\libraries\src\Application\CMSApplication.php(294): Joomla\CMS\Application\SiteApplication->doExecute() #8 \XAMPP2\htdocs\pgc\includes\app.php(61): Joomla\CMS\Application\CMSApplication->execute() #9 \XAMPP2\htdocs\pgc\index.php(32): require_once('\\XAMPP2\\htdoc...') #10 {main}
</trace>
</error>

Hello,

The RSS URL is like that on Kunena 6.x, this one is when SEF is completly disabled on Joomla! : /index.php?option=com_kunena&view=topics&format=feed&type=rss&layout=feed&mode=topics