From 4f4d7cbd4c486eeb739deaf9a8cbbea20a5f4564 Mon Sep 17 00:00:00 2001
From: yangdx <yangdx@znipower.com>
Date: Sat, 15 Mar 2025 16:01:03 +0800
Subject: [PATCH] Fix empty graph check problem of graph view load

---
 lightrag_webui/src/components/graph/ZoomControl.tsx | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/lightrag_webui/src/components/graph/ZoomControl.tsx b/lightrag_webui/src/components/graph/ZoomControl.tsx
index 5739ea67..b978c3b0 100644
--- a/lightrag_webui/src/components/graph/ZoomControl.tsx
+++ b/lightrag_webui/src/components/graph/ZoomControl.tsx
@@ -27,7 +27,8 @@ const ZoomControl = () => {
       const graph = sigma.getGraph()
 
       // Check if graph has nodes before accessing them
-      if (!graph || graph.nodes().length === 0) {
+      if (!graph?.order || graph.nodes().length === 0) {
+        // Use reset() for empty graph case
         reset()
         return
       }
@@ -73,6 +74,8 @@ const ZoomControl = () => {
       )
     } catch (error) {
       console.error('Error resetting zoom:', error)
+      // Use reset() as fallback on error
+      reset()
     }
   }, [sigma, reset])