From 62dd2e78bdbe4155dbb70cbf2fd3316ae0ca49c5 Mon Sep 17 00:00:00 2001
From: Salim Kanoun <salim.kanoun@gmail.com>
Date: Thu, 1 Jun 2023 23:32:16 +0200
Subject: [PATCH] null safe

---
 extensions/cornerstone/src/initWADOImageLoader.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/extensions/cornerstone/src/initWADOImageLoader.js b/extensions/cornerstone/src/initWADOImageLoader.js
index f5ac1a8ab..193209b03 100644
--- a/extensions/cornerstone/src/initWADOImageLoader.js
+++ b/extensions/cornerstone/src/initWADOImageLoader.js
@@ -57,7 +57,7 @@ export default function initWADOImageLoader(
     },
     beforeSend: function (xhr) {
       const headers = userAuthenticationService.getAuthorizationHeader();
-      const sourceConfig = extensionManager.getActiveDataSource()[0].getConfig()
+      const sourceConfig = extensionManager.getActiveDataSource()?.[0].getConfig() ?? {}
       const acceptHeader = generateAcceptHeader(sourceConfig.acceptHeader, sourceConfig.omitQuotationForMultipartRequest)
 
       // Request: