From 54ad9a76298c5c29b2227e8dda6f323f22136ef2 Mon Sep 17 00:00:00 2001
From: Wojtek Figat <wojtek@figat.pl>
Date: Mon, 20 Jan 2025 23:49:17 +0100
Subject: [PATCH] Fix error when connecting nodes in Visject

---
 Source/Editor/Surface/VisjectSurface.Connecting.cs | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/Source/Editor/Surface/VisjectSurface.Connecting.cs b/Source/Editor/Surface/VisjectSurface.Connecting.cs
index 8a74ef8e6..fbbfa2053 100644
--- a/Source/Editor/Surface/VisjectSurface.Connecting.cs
+++ b/Source/Editor/Surface/VisjectSurface.Connecting.cs
@@ -60,12 +60,12 @@ namespace FlaxEditor.Surface
                 if (toIsReference && !fromIsReference)
                 {
                     var toTypeName = to.TypeName;
-                    return from.TypeName == toTypeName.Substring(0, toTypeName.Length - 1);
+                    return !string.IsNullOrEmpty(toTypeName) && from.TypeName == toTypeName.Substring(0, toTypeName.Length - 1);
                 }
                 if (!toIsReference && fromIsReference)
                 {
                     var fromTypeName = from.TypeName;
-                    return to.TypeName == fromTypeName.Substring(0, fromTypeName.Length - 1);
+                    return !string.IsNullOrEmpty(fromTypeName) && to.TypeName == fromTypeName.Substring(0, fromTypeName.Length - 1);
                 }
 
                 // Implicit casting is supported for object reference to test whenever it is valid