From 4fc4105ee5b325df763428228d7cc6b45a72d22e Mon Sep 17 00:00:00 2001
From: susiyang <susiyang@apusapps.com>
Date: Wed, 10 Mar 2021 18:47:12 +0800
Subject: [PATCH] fix bug #563

---
 src/controllers/protection.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/controllers/protection.js b/src/controllers/protection.js
index c7783a5..f0b6779 100644
--- a/src/controllers/protection.js
+++ b/src/controllers/protection.js
@@ -922,7 +922,7 @@ export function checkProtectionLocked(r, c, sheetIndex, isOpenAlert=true, isLock
 //cell hidden state
 export function checkProtectionCellHidden(r, c, sheetIndex){
     let sheetFile = sheetmanage.getSheetByIndex(sheetIndex);
-    if(!sheetFile || !sheetFile.data[r] || !sheetFile.data[r][c]){
+    if(!sheetFile || (sheetFile.data && !sheetFile.data[r]) || (sheetFile.data && !sheetFile.data[r][c])){
         return true;
     }