Update vector_store_retriever.py

vector_store_retriever.py

@@ -2,15 +2,15 @@ import json
 import os
 import gradio as gr
 import time
-from pydantic_settings import BaseSettings, validator
+from pydantic import BaseModel, Field
 from typing import Any, Optional, Dict, List
 from huggingface_hub import InferenceClient
 from langchain.llms.base import LLM
 from langchain.embeddings import HuggingFaceInstructEmbeddings
 from langchain.vectorstores import Chroma
+from dotenv import load_dotenv
 from transformers import AutoTokenizer
 from transformers import Tool
-from dotenv import load_dotenv
 
 load_dotenv()