Update router.py

router.py

@@ -15,7 +15,7 @@ def routing_agent(query, key, chat_history):
         messages=[
             {"role": "system", "content": system_prompt},
             {"role": "user", "content": query},
-            {"role": "chat_history", "content": chat_history}
+            {"role": "assistant", "content": "Here is the chat history: " + chat_history}
         ]
     )