Update app.py

app.py

@@ -6,7 +6,9 @@ from langchain_openai import OpenAIEmbeddings, ChatOpenAI  # Updated import
 from langchain_community.vectorstores import FAISS  # Updated import
 # from langchain.memory import ConversationBufferMemory
 from langchain_classic.memory import ConversationBufferMemory
-from langchain.chains import ConversationalRetrievalChain
+# from langchain.chains import ConversationalRetrievalChain
+from langchain_classic.chains import ConversationalRetrievalChain
+
 from htmlTemplates import css, bot_template, user_template
 import os