Update app.py

app.py

@@ -2,13 +2,14 @@ from langchain.text_splitter import CharacterTextSplitter
 # from langchain.vectorstores import FAISS
 from langchain_community.vectorstores import FAISS
 # from langchain.chat_models import ChatOpenAI
+from langchain_community.document_loaders import UnstructuredFileLoader
 from langchain_community.chat_models import ChatOpenAI
 from langchain_openai import AzureChatOpenAI,AzureOpenAIEmbeddings
 from langchain.memory import ConversationBufferMemory
 from langchain.chains import ConversationChain
 from langchain.chains import ConversationalRetrievalChain
 # from langchain.document_loaders import UnstructuredFileLoader
-from langchain_unstructured import UnstructuredFileLoader
+# from langchain_unstructured import UnstructuredFileLoader
 from typing import List, Dict, Tuple
 import gradio as gr
 import validators