Update app.py

app.py

@@ -8,6 +8,7 @@ from datetime import datetime, timezone
 from crewai import Agent, Crew, Process, Task
 from crewai.tools import tool
 from langchain_groq import ChatGroq
+from langchain_openai import ChatOpenAI
 from langchain.schema.output import LLMResult
 from langchain_core.callbacks.base import BaseCallbackHandler
 from langchain_community.tools.sql_database.tool import (