From 29223fe63471f0bb2ea999c18536855415a8b880 Mon Sep 17 00:00:00 2001
From: yflory <yann.flory@xwiki.com>
Date: Thu, 25 Mar 2021 11:08:48 +0100
Subject: [PATCH] Fix checkpoint fallback in OO

---
 www/common/onlyoffice/inner.js | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/www/common/onlyoffice/inner.js b/www/common/onlyoffice/inner.js
index d06e9a534..300186fd0 100644
--- a/www/common/onlyoffice/inner.js
+++ b/www/common/onlyoffice/inner.js
@@ -263,6 +263,9 @@ define([
             i = i || 0;
             var idx = sortCpIndex(hashes);
             var lastIndex = idx[idx.length - 1 - i];
+            if (typeof(lastIndex) === "undefined" || !hashes[lastIndex]) {
+                return {};
+            }
             var last = JSON.parse(JSON.stringify(hashes[lastIndex]));
             return last;
         };