From 4a366f4df0ae7cbad2aaf093ad2fc8787395a2d1 Mon Sep 17 00:00:00 2001
From: Vincent Vanwaelscappel <vincent@cubedesigners.com>
Date: Thu, 22 Jun 2023 15:37:51 +0200
Subject: [PATCH] wip #6059

---
 js/libs/fluidbook/fluidbook.secure.js | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/js/libs/fluidbook/fluidbook.secure.js b/js/libs/fluidbook/fluidbook.secure.js
index 8980c17d..a7a44bee 100644
--- a/js/libs/fluidbook/fluidbook.secure.js
+++ b/js/libs/fluidbook/fluidbook.secure.js
@@ -127,7 +127,10 @@ FluidbookSecure.prototype = {
 
     checkSecureByClientSidePassword: function (callback) {
 
-        var u = window.sessionStorage.getItem('secureUsername').toLowerCase();
+        var u = window.sessionStorage.getItem('secureUsername');
+        if (u !== null) {
+            u = u.toLowerCase();
+        }
         var p = window.sessionStorage.getItem('securePassword');
         var ok = false;
         if (u !== null && p !== null) {
-- 
2.39.5