Update llm_node.py

llm_node.py

@@ -1,7 +1,9 @@
 def llm_node(question, search_result):
-    # Make sure search_result is a string
+    # Check if search_result is a list of dicts
     if isinstance(search_result, list):
-        combined_result = " ".join(search_result)
+        combined_result = " ".join(
+            item.get("content", "") for item in search_result if isinstance(item, dict)
+        )
     else:
         combined_result = str(search_result)