From 902703d1457ab0927a6f4ac85e2b6f8bf598e55d Mon Sep 17 00:00:00 2001
From: He Wang <wanghechn@qq.com>
Date: Fri, 19 Sep 2025 19:12:18 +0800
Subject: [PATCH] Fix: skip tag query if tag kbs are invalid (#10168)

### What problem does this PR solve?

Skip `tag_query` step if `tag_kbs` are empty.

### Type of change

- [x] Bug Fix (non-breaking change which fixes an issue)
---
 rag/app/tag.py | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/rag/app/tag.py b/rag/app/tag.py
index 179d72e24..de2ce0fa6 100644
--- a/rag/app/tag.py
+++ b/rag/app/tag.py
@@ -138,6 +138,8 @@ def label_question(question, kbs):
         else:
             all_tags = json.loads(all_tags)
         tag_kbs = KnowledgebaseService.get_by_ids(tag_kb_ids)
+        if not tag_kbs:
+            return tags
         tags = settings.retrievaler.tag_query(question,
                                               list(set([kb.tenant_id for kb in tag_kbs])),
                                               tag_kb_ids,