Update app.py

app.py

@@ -14,6 +14,8 @@ import pandas as pd
 import numpy as np
 from dotenv import load_dotenv
 from langchain_google_vertexai import ChatVertexAI
+from langchain.chat_models import ChatGoogleGenerativeAI
+from langchain_google_genai import ChatGoogleGenerativeAI
 
 
 warnings.filterwarnings("ignore", category=DeprecationWarning)