From 98a7262818e0a4ccc9e1f21c9d78476fe399cccb Mon Sep 17 00:00:00 2001
From: CodeWithDennis <personal.elsinga@gmail.com>
Date: Thu, 16 Jul 2026 09:05:10 +0200
Subject: [PATCH] fix(select-tree): handle empty strict root results

---
 src/SelectTree.php | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/SelectTree.php b/src/SelectTree.php
index ac4963f..1845b7e 100644
--- a/src/SelectTree.php
+++ b/src/SelectTree.php
@@ -251,7 +251,7 @@ private function buildTreeFromResults($results, $parent = null): Collection
         // If the tree has strict rull parent root nodes, only retrieve children whose parent is the null value
         // Otherwise, promote other orphaned children to root nodes
         $orphanedResults = $this->hasStrictNullParentRootNodes()
-        ? [$parent => $resultCache[$parent]['children']]
+        ? [$parent => $resultCache[$parent]['children'] ?? []]
         : array_map(
             fn ($item) => $item['children'],
             array_filter(