From 46fecabfdf800404fde6e9a7d6941e4eb10a8057 Mon Sep 17 00:00:00 2001
From: ah-net <103565001+ah-net@users.noreply.github.com>
Date: Wed, 4 May 2022 09:58:48 +0200
Subject: [PATCH] Fix php 7.4 bug

---
 Model/Catalog/Layer/Url/Strategy/QueryParameterStrategy.php | 1 +
 1 file changed, 1 insertion(+)

diff --git a/Model/Catalog/Layer/Url/Strategy/QueryParameterStrategy.php b/Model/Catalog/Layer/Url/Strategy/QueryParameterStrategy.php
index 6effbaa6..cd7a5a8e 100644
--- a/Model/Catalog/Layer/Url/Strategy/QueryParameterStrategy.php
+++ b/Model/Catalog/Layer/Url/Strategy/QueryParameterStrategy.php
@@ -127,6 +127,7 @@ protected function getCurrentQueryUrl(MagentoHttpRequest $request, array $query)
 
         if ($originalUrl = $request->getQuery('__tw_original_url')) {
             $urlArray = explode('/', $originalUrl);
+            $newOriginalUrl = '';
             foreach ($urlArray as $url) {
                 $newOriginalUrl .= '/' . filter_var($url, FILTER_SANITIZE_ENCODED);
             }