From 113d741b00adada897f595cc62f3edaee2355066 Mon Sep 17 00:00:00 2001
From: "peter.janssens" <peter.janssens@kuleuven.be>
Date: Fri, 16 Jan 2026 13:41:56 +0100
Subject: [PATCH] guard against null for array_keys

---
 themes/default/views/bundles/ca_search_form_placements.php | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/themes/default/views/bundles/ca_search_form_placements.php b/themes/default/views/bundles/ca_search_form_placements.php
index 430c1804b1..87b5f000e3 100644
--- a/themes/default/views/bundles/ca_search_form_placements.php
+++ b/themes/default/views/bundles/ca_search_form_placements.php
@@ -75,7 +75,7 @@
 				
 				availableDisplayList: <?= json_encode($va_available_display_items); ?>,
 				initialDisplayList: 	<?= json_encode($va_to_display_items); ?>,
-				initialDisplayListOrder : <?= json_encode(array_keys($va_to_display_items)); ?>,
+				initialDisplayListOrder : <?= json_encode(array_keys($va_to_display_items ?? [])); ?>,
 				
 				availableSearchID: 'bundleEditorAvailableListSearch',