Error: Call to a member function getFilterSql() on null in /home/kroenxbj/www.kronjuwelen.com/oxid6/source/modules/shopboost/multifilter/Application/Model/ArticleList.php:207
Stack trace:
#0 /home/kroenxbj/www.kronjuwelen.com/oxid6/source/modules/shopboost/multifilter/Application/Model/ArticleList.php(49): SHOPBOOST\MULTIFILTER\Application\Model\ArticleList->_getCategoryCountSelect('c7c2555081915ea...', NULL)
#1 /home/kroenxbj/www.kronjuwelen.com/oxid6/vendor/oxid-esales/oxideshop-ce/source/Application/Model/RssFeed.php(544): SHOPBOOST\MULTIFILTER\Application\Model\ArticleList->loadCategoryArticles('c7c2555081915ea...', NULL, '20')
#2 /home/kroenxbj/www.kronjuwelen.com/oxid6/vendor/oxid-esales/oxideshop-ce/source/Application/Controller/RssController.php(142): OxidEsales\EshopCommunity\Application\Model\RssFeed->loadCategoryArticles(Object(OxidEsales\Eshop\Application\Model\Category))
#3 /home/kroenxbj/www.kronjuwelen.com/oxid6/vendor/oxid-esales/oxideshop-ce/source/Core/Controller/BaseController.php(523): OxidEsales\EshopCommunity\Application\Controller\RssController->catarts()
#4 /home/kroenxbj/www.kronjuwelen.com/oxid6/vendor/oxid-esales/oxideshop-ce/source/Core/ShopControl.php(332): OxidEsales\EshopCommunity\Core\Controller\BaseController->executeFunction('catarts')
#5 /home/kroenxbj/www.kronjuwelen.com/oxid6/vendor/oxid-esales/oxideshop-ce/source/Core/ShopControl.php(274): OxidEsales\EshopCommunity\Core\ShopControl->executeAction(Object(OxidEsales\Eshop\Application\Controller\RssController), 'catarts')
#6 /home/kroenxbj/www.kronjuwelen.com/oxid6/vendor/oxid-esales/oxideshop-ce/source/Core/ShopControl.php(137): OxidEsales\EshopCommunity\Core\ShopControl->_process('OxidEsales\\Esho...', 'catarts', NULL, NULL)
#7 /home/kroenxbj/www.kronjuwelen.com/oxid6/vendor/oxid-esales/oxideshop-ce/source/Core/Oxid.php(26): OxidEsales\EshopCommunity\Core\ShopControl->start()
#8 /home/kroenxbj/www.kronjuwelen.com/oxid6/source/index.php(15): OxidEsales\EshopCommunity\Core\Oxid::run()
#9 /home/kroenxbj/www.kronjuwelen.com/oxid6/source/oxseo.php(28): require('/home/kroenxbj/...')
#10 {main}