Update app.py

app.py

@@ -7,7 +7,7 @@ from PIL import Image
 import requests
 from datetime import datetime
 import pandas as pd
-from langchain.docstore.document import Document
+from langchain_core.documents import Document
 from langchain_community.vectorstores import Chroma
 from langchain_google_genai import GoogleGenerativeAIEmbeddings