Update app.py

app.py

@@ -5,9 +5,9 @@ from langchain_community.chat_message_histories import ChatMessageHistory
 from pypdf import PdfReader
 import os
 import gradio as gr
-from langchain_openai import AzureOpenAI
+from langchain_openai import AzureChatOpenAI
 
-client = AzureOpenAI(
+client = AzureChatOpenAI(
             api_key=os.getenv("AZURE_OPENAI_API_KEY"),
             api_version=os.getenv("OPENAI_API_VERSION"),
             azure_endpoint=os.getenv("AZURE_OPENAI_ENDPOINT"),