Update app.py

app.py

@@ -1,6 +1,6 @@
 import streamlit as st
 from langchain import hub
-from langchain_chroma import Chrom a
+from langchain_chroma import Chroma
 from langchain_community.document_loaders import PyPDFLoader
 from langchain_core.output_parsers import StrOutputParser
 from langchain_core.runnables import RunnablePassthrough
@@ -8,6 +8,8 @@ from langchain_text_splitters import RecursiveCharacterTextSplitter
 from sentence_transformers import SentenceTransformer
 import torch
 
+# ... rest of the code remains the same ...
+
 # Define the embedding class
 class SentenceTransformerEmbedding:
     def __init__(self, model_name):