From a41ced13459d67122604ccdb170779f50fc841a8 Mon Sep 17 00:00:00 2001
From: Willem Jiang <willem.jiang@gmail.com>
Date: Thu, 4 Sep 2025 15:45:30 +0800
Subject: [PATCH] fix: the search content return tuple issue (#555)

---
 src/graph/nodes.py | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/graph/nodes.py b/src/graph/nodes.py
index 14080aa..12dc9bf 100644
--- a/src/graph/nodes.py
+++ b/src/graph/nodes.py
@@ -53,6 +53,9 @@ def background_investigation_node(state: State, config: RunnableConfig):
         searched_content = LoggedTavilySearch(
             max_results=configurable.max_search_results
         ).invoke(query)
+        # check if the searched_content is a tuple, then we need to unpack it
+        if isinstance(searched_content, tuple):
+            searched_content = searched_content[0]
         if isinstance(searched_content, list):
             background_investigation_results = [
                 f"## {elem['title']}\n\n{elem['content']}" for elem in searched_content