Update vector_store_retriever.py

vector_store_retriever.py

@@ -5,7 +5,8 @@ import time
 from pydantic import BaseModel, Field
 from typing import Any, Optional, Dict, List, Union
 from huggingface_hub import InferenceClient
-from langchain.llms.base import LLM, Documents, Images, EmbeddingFunction, Embeddings
+from langchain.llms.base import LLM, Images, EmbeddingFunction, Embeddings
+from langchain.Documents import Documents
 from langchain.vectorstores import Chroma
 from dotenv import load_dotenv
 from transformers import AutoTokenizer, AutoModel, Tool