From 00ced7cea74f113d1f9b225b13ef2cd261327c6c Mon Sep 17 00:00:00 2001
From: Vitaliy Filippov <vitalif@yourcmc.ru>
Date: Mon, 5 May 2025 01:36:56 +0300
Subject: [PATCH] Fix monitor crash with non-existing node_placement nodes

---
 mon/osd_tree.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/mon/osd_tree.js b/mon/osd_tree.js
index a0fa9b4e..0ca115c6 100644
--- a/mon/osd_tree.js
+++ b/mon/osd_tree.js
@@ -110,7 +110,7 @@ function make_hier_tree(global_config, tree)
             if (!(tree[node_id].children||[]).length && (tree[node_id].size||0) <= 0)
             {
                 const parent = tree[node_id].parent;
-                if (parent)
+                if (parent && tree[parent])
                 {
                     tree[parent].children = tree[parent].children.filter(c => c != tree[node_id]);
                 }