Update app.py

app.py

@@ -60,7 +60,7 @@ def get_conversation_chain(vectorstore:FAISS) -> ConversationalRetrievalChain:
 
     memory = ConversationBufferMemory(memory_key="chat_history", return_messages=True)
     conversation_chain = ConversationalRetrievalChain.from_llm(
-        llm=llm, retriever=vectorstore.as_retriever()
+        llm=llm, retriever=vectorstore.as_retriever(),memory=memory
     )
     return conversation_chain