Fatal error: Uncaught Error: Call to a member function getResults() on null in /var/www/magento-dev/vendor/doofinder/doofinder-magento2/Helper/Search.php:99 Stack trace: #0 /var/www/magento-dev/vendor/doofinder/doofinder-magento2/Search/Adapter.php(111): Doofinder\Feed\Helper\Search->performDoofinderSearch('', Array) #1 /var/www/magento-dev/vendor/doofinder/doofinder-magento2/Search/Adapter.php(84): Doofinder\Feed\Search\Adapter->getDocuments('', Array) #2 /var/www/magento-dev/vendor/magento/module-search/Model/SearchEngine.php(42): Doofinder\Feed\Search\Adapter->query(Object(Magento\Framework\Search\Request)) #3 /var/www/magento-dev/vendor/magento/framework/Interception/Interceptor.php(58): Magento\Search\Model\SearchEngine->search(Object(Magento\Framework\Search\Request)) #4 /var/www/magento-dev/vendor/magento/framework/Interception/Interceptor.php(138): Magento\Search\Model\SearchEngine\Interceptor->___callParent('search', Array) #5 /var/www/magento-dev/app/code/MageWorx/LocationPages/Plugin/UseMysqlForLocationPagePlug in /var/www/magento-dev/vendor/doofinder/doofinder-magento2/Helper/Search.php on line 99