From 02e188dfa21c9941c3f9317b36e5aa5de680ef39 Mon Sep 17 00:00:00 2001
From: Agent Zero <agent@media-on.de>
Date: Thu, 30 Jul 2026 09:35:32 +0200
Subject: [PATCH] fix: customFieldDefs.items optional chaining to prevent crash
 on empty response

---
 frontend/src/pages/ContactsList.tsx | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/frontend/src/pages/ContactsList.tsx b/frontend/src/pages/ContactsList.tsx
index 423f159..a9719e1 100644
--- a/frontend/src/pages/ContactsList.tsx
+++ b/frontend/src/pages/ContactsList.tsx
@@ -79,7 +79,7 @@ export function ContactsListPage() {
 
   // Build custom field defs for filter/sort/group functions
   const customDefsForFunctions = useMemo(() => {
-    if (!customFieldDefs || customFieldDefs.items.length === 0) return undefined;
+    if (!customFieldDefs || !customFieldDefs.items || customFieldDefs.items.length === 0) return undefined;
     return customFieldDefs.items
       .filter((def) => def.is_active)
       .map((def) => ({