From 2138ceea801b646b4d5c5b71c7083c5e9b78d484 Mon Sep 17 00:00:00 2001
From: Christian Byrne <cbyrne@comfy.org>
Date: Mon, 11 Aug 2025 19:28:15 -0700
Subject: [PATCH] [fix] ensure consistent link release behavior for subgraph IO
 nodes (#4931)

---
 src/lib/litegraph/src/canvas/LinkConnector.ts | 10 ++++++++--
 1 file changed, 8 insertions(+), 2 deletions(-)

diff --git a/src/lib/litegraph/src/canvas/LinkConnector.ts b/src/lib/litegraph/src/canvas/LinkConnector.ts
index ea57a3a6f..8f925bbc7 100644
--- a/src/lib/litegraph/src/canvas/LinkConnector.ts
+++ b/src/lib/litegraph/src/canvas/LinkConnector.ts
@@ -640,7 +640,10 @@ export class LinkConnector {
 
     if (connectingTo === 'input' && ioNode instanceof SubgraphOutputNode) {
       const output = ioNode.getSlotInPosition(canvasX, canvasY)
-      if (!output) throw new Error('No output slot found for link.')
+      if (!output) {
+        this.dropOnNothing(event)
+        return
+      }
 
       // Track the actual slot to use for all connections
       let targetSlot = output
@@ -669,7 +672,10 @@ export class LinkConnector {
       ioNode instanceof SubgraphInputNode
     ) {
       const input = ioNode.getSlotInPosition(canvasX, canvasY)
-      if (!input) throw new Error('No input slot found for link.')
+      if (!input) {
+        this.dropOnNothing(event)
+        return
+      }
 
       // Same logic for SubgraphInputNode if needed
       let targetSlot = input