Update main.py

main.py

@@ -19,7 +19,7 @@ from langchain.memory import ChatMessageHistory, ConversationBufferMemory
 import pandas as pd
 import numpy as np
 from anthropic import Anthropic, HUMAN_PROMPT, AI_PROMPT
-from langchain.chat_models import ChatAnthropic
+from langchain_anthropic import ChatAnthropic
 import chainlit as cl
 from chainlit.input_widget import Select, TextInput
 from chainlit import user_session