Redirect to search page on empty url argument

public/typo3conf/ext/ep_products/Classes/Controller/ProductController.php

@@ -33,6 +33,7 @@ use EP\EpProducts\Domain\Repository\HotelRepository;
 use EP\EpProducts\Domain\Repository\ProductRepository;
 use EP\EpProducts\Service\DateService;
 use EP\EpProducts\Service\FilterService;
+use EP\EpProducts\Service\FilterSettingsEncoder;
 use EP\EpProducts\Service\HotelDataService;
 use EP\EpProducts\Service\ProductDataService;
 use TYPO3\CMS\Core\Utility\GeneralUtility;
@@ -113,7 +114,15 @@ class ProductController extends ActionController
         }
         // Redirect to search page in case no product can be determined
         if ($product === null) {
-            $this->redirect('search', 'Search', null, null, $this->settings['defaultSearchPageUid']);
+            $filterSettings = $this->filterService->getDefaultFilterSettings();
+            $filterSettingsEncoded = FilterSettingsEncoder::encode($filterSettings);
+            $this->redirect(
+                'searchresult',
+                'Search',
+                null,
+                ['filterSettings' => $filterSettingsEncoded],
+                $this->settings['defaultSearchPageUid']
+            );
         }
         // Get hotel to display from flexform settings if not provided via url
         if ((int)$this->settings['hotelUid'] > 0) {