Update app.py

app.py

@@ -9,7 +9,7 @@ import pandas as pd
 from uuid import uuid4
 from langchain_core.documents import Document
 import numpy as np
-from sentence_transformers import SentenceTransformer
+#from sentence_transformers import SentenceTransformer
 from langchain.text_splitter import CharacterTextSplitter, RecursiveCharacterTextSplitter
 from langchain.chains import RetrievalQA
 from langchain.llms import OpenAI