From 6e650163da4f990cc27212391d5853f3eb630c65 Mon Sep 17 00:00:00 2001
From: Dimitri Sukhankin <90870844+suhankins@users.noreply.github.com>
Date: Sat, 21 Jun 2025 00:11:31 +0400
Subject: [PATCH] Add a proper error message when trying to add node to a group
 with an empty name

---
 scene/main/node.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/scene/main/node.cpp b/scene/main/node.cpp
index 610a2c61cb..170b3680a4 100644
--- a/scene/main/node.cpp
+++ b/scene/main/node.cpp
@@ -2391,7 +2391,7 @@ bool Node::is_in_group(const StringName &p_identifier) const {
 
 void Node::add_to_group(const StringName &p_identifier, bool p_persistent) {
 	ERR_THREAD_GUARD
-	ERR_FAIL_COND(!p_identifier.operator String().length());
+	ERR_FAIL_COND_MSG(p_identifier.is_empty(), vformat("Cannot add node '%s' to a group with an empty name.", get_name()));
 
 	if (data.grouped.has(p_identifier)) {
 		return;