Update utils/database.py

utils/database.py

@@ -18,7 +18,6 @@ from langchain.agents.output_parsers.openai_tools import OpenAIToolsAgentOutputP
 from langchain.text_splitter import RecursiveCharacterTextSplitter
 from langchain_community.document_loaders import PyPDFLoader
 from langchain.vectorstores import FAISS
-
 import os
 import streamlit as st
 import sqlite3
@@ -27,7 +26,9 @@ import time
 import io
 import tempfile
 from sqlite3 import Error
-
+from threading import Lock
+from typing import Dict, List, Optional, Any
+from datetime import datetime
 from threading import Lock
 
 # Create a lock for database connection