Update utils.py

utils.py

@@ -122,14 +122,14 @@ def extract_question_list(llm, query):
     sys_prompt = """You are an AI assistant that determines if multiple questions are stacked in a single question and split the question into sub questions and return a list of them. Make sure the response is a valid Python list. 
     If the question is a single question and return the original question."""
 
-    message1 = SystemMessage(content=sys_prompt)
-
-    message2 = HumanMessage(
-        content=query
-    )
-    message_log = [message1, message2]
-    
-    output = llm.invoke(message_log)
+    messages = [
+    (
+        "system",
+        sys_prompt,
+    ),
+    ("human", query),
+    ]
+    output = llm.invoke(messages)
     pred = output.content
 
     try: