From afb55bcefebf5c22d2dbc484da5ece9c2b77148b Mon Sep 17 00:00:00 2001
From: John Estabrook <jestabro@vyos.io>
Date: Wed, 28 Oct 2026 13:46:07 -0500
Subject: T9529: wrapper should check result and raise error on null

---
 python/vyos/configtree.py | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/python/vyos/configtree.py b/python/vyos/configtree.py
index b8de379eb..2a0dc5d44 100644
--- a/python/vyos/configtree.py
+++ b/python/vyos/configtree.py
@@ -907,6 +907,9 @@ def validate_tree_filter(
         raise ConfigTreeError(e)
 
     msg = lib.get_error().decode()
+    if not res:
+        raise ConfigTreeError(msg)
+
     tree = ConfigTree(address=res)
 
     return tree, msg
-- 
cgit v1.2.3