Update app.py

app.py

@@ -95,7 +95,7 @@ def chat(message,
     messages.append(HM(content=message))
     memory=MEM(memory_key="history")
     agent=Ex(agent=Agent(llm,tools,prompt),tools=tools,verbose=True,handle_parsing_errors=True,memory=memory)
-    return agent.invoke({"input":messages,"chat_history":memory})
+    return agent.invoke({"input":messages,"chat_history":memory.buffer_as_messages})
 ai1=gr.ChatInterface(
     chat,
     chatbot=chatbot,