From 3d5d0677d2b3cec6bfeea897eafb579f2a19b7a7 Mon Sep 17 00:00:00 2001
From: GlazerMann <kurt@ioiowa.com>
Date: Wed, 25 Dec 2024 18:17:11 -0600
Subject: [PATCH] Update Zotero.php

---
 Zotero.php | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/Zotero.php b/Zotero.php
index ef9f6bc8eb..9791ebca0e 100644
--- a/Zotero.php
+++ b/Zotero.php
@@ -517,7 +517,7 @@ public static function process_zotero_response(string $zotero_response, Template
         unset($result->language);
         unset($result->source);
 
-        if (substr($result->publicationTitle, -2) === " |") {
+        if (isset($result->publicationTitle) && substr($result->publicationTitle, -2) === " |") {
             $result->publicationTitle = substr($result->publicationTitle, 0, -2);
         }
         if (stripos($url, 'www.royal.uk') !== false) {