Update app.py

app.py

@@ -17,7 +17,7 @@ from langchain_community.document_loaders import (
 from datetime import datetime
 from pydub import AudioSegment
 import pytz
-
+import chromadb
 from langchain.chains import ConversationalRetrievalChain
 from langchain.text_splitter import RecursiveCharacterTextSplitter
 from langchain_openai import ChatOpenAI, OpenAIEmbeddings