From e03633003c66c190062ef27b837e52d813d5b321 Mon Sep 17 00:00:00 2001
From: Medvediev <v.medvediev@atwix.com>
Date: Tue, 4 Jan 2022 13:40:10 +0200
Subject: [PATCH] Fixed undefined index error in advanced search

---
 app/code/Magento/CatalogSearch/Model/Advanced.php | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/app/code/Magento/CatalogSearch/Model/Advanced.php b/app/code/Magento/CatalogSearch/Model/Advanced.php
index cd6bad381d56a..430ef1b7b602b 100644
--- a/app/code/Magento/CatalogSearch/Model/Advanced.php
+++ b/app/code/Magento/CatalogSearch/Model/Advanced.php
@@ -424,7 +424,7 @@ protected function getPreparedSearchCriteria($attribute, $value)
         } elseif ($attribute->getFrontendInput() == 'select' || $attribute->getFrontendInput() == 'multiselect') {
             $value = $attribute->getSource()->getOptionText($value);
             if (is_array($value)) {
-                $value = $value['label'];
+                $value = $value['label'] ?? false;
             }
         } elseif ($attribute->getFrontendInput() == 'boolean') {
             if (is_numeric($value)) {