From 484a417a49678b233adecf4adb8a5fca191eef50 Mon Sep 17 00:00:00 2001
From: sabineabele <sabine.abele@cubesystems.lv>
Date: Thu, 24 Mar 2022 20:34:30 +0200
Subject: [PATCH] Fix success response nullable VK_T_NO parameter

---
 src/Messages/CompleteRequest.php | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/Messages/CompleteRequest.php b/src/Messages/CompleteRequest.php
index 8fb7a02..d81eb56 100644
--- a/src/Messages/CompleteRequest.php
+++ b/src/Messages/CompleteRequest.php
@@ -100,7 +100,7 @@ protected function validateResponseParameters()
 
         //check for missing fields, will throw exc. on missing fields
         foreach ($responseFields as $fieldName => $usedInHash) {
-            if (! isset($response[$fieldName])) {
+            if (! array_key_exists($fieldName, $response)) {
                 throw new InvalidRequestException("The $fieldName parameter is required");
             }
         }