Update app.py

app.py

@@ -366,12 +366,12 @@ from datetime import datetime
 from dotenv import load_dotenv
 from huggingface_hub import InferenceClient
 from io import BytesIO
-from langchain.chat_models import ChatOpenAI
-from langchain.chains import ConversationalRetrievalChain
-from langchain.embeddings import OpenAIEmbeddings
-from langchain.memory import ConversationBufferMemory
-from langchain.text_splitter import CharacterTextSplitter
-from langchain.vectorstores import FAISS
+#from langchain.chat_models import ChatOpenAI
+#from langchain.chains import ConversationalRetrievalChain
+#from langchain.embeddings import OpenAIEmbeddings
+#from langchain.memory import ConversationBufferMemory
+#from langchain.text_splitter import CharacterTextSplitter
+#from langchain.vectorstores import FAISS
 from openai import ChatCompletion
 from PyPDF2 import PdfReader
 from templates import bot_template, css, user_template