Update app.py

app.py

@@ -1,11 +1,14 @@
 import gradio as gr
 import wikipedia
-from langchain_community.chat_models import ChatOpenAI
+#from langchain_community.chat_models import ChatOpenAI
 from langchain.memory import ConversationBufferMemory
 from langchain.agents import initialize_agent, AgentType
 from langchain.prompts import ChatPromptTemplate, MessagesPlaceholder
 from langchain.tools import Tool
 
+from langchain_openai import ChatOpenAI
+
+
 # Optional: Tavily client
 try:
     from tavily import TavilyClient