Update app.py

app.py

@@ -6,7 +6,7 @@ import time
 
 from langchain.chains import LLMChain, RetrievalQA
 from langchain.chat_models import ChatOpenAI
-from langchain.document_loaders import PyPDFLoader, WebBaseLoader, PyMuPDFLoader, UnstructuredWordDocumentLoader
+from langchain.document_loaders import PyPDFLoader, WebBaseLoader, PyMuPDFLoader, UnstructuredWordDocumentLoader, DirectoryLoader
 from langchain.document_loaders.blob_loaders.youtube_audio import YoutubeAudioLoader
 from langchain.document_loaders.generic import GenericLoader
 from langchain.document_loaders.parsers import OpenAIWhisperParser