From 105382f48861e7f358b4330a0e9a49d686ff380a Mon Sep 17 00:00:00 2001
From: "lixuefei.1313" <lixuef1313@163.com>
Date: Wed, 17 Sep 2025 10:45:55 +0800
Subject: [PATCH] fix: fix the bug of null value error in sankey chart

---
 packages/vchart/src/series/sankey/sankey.ts | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/packages/vchart/src/series/sankey/sankey.ts b/packages/vchart/src/series/sankey/sankey.ts
index f357340808..19989344b8 100644
--- a/packages/vchart/src/series/sankey/sankey.ts
+++ b/packages/vchart/src/series/sankey/sankey.ts
@@ -1014,7 +1014,7 @@ export class SankeySeries<T extends ISankeySeriesSpec = ISankeySeriesSpec> exten
       // no validate domain
       colorDomain = this.getNodeList();
 
-      if (colorDomain.length > 10) {
+      if (colorDomain && colorDomain.length > 10) {
         colorRange = (this._getDataScheme()[1] as any)?.scheme;
       }
     }