Update app.py

app.py

@@ -50,15 +50,10 @@ prompt = ChatPromptTemplate.from_messages(messages)
 from langchain.chat_models import ChatOpenAI
 from langchain.chains import ConversationalRetrievalChain
 
-chain_type_kwargs = {"prompt": prompt}
-
 chain = ConversationalRetrievalChain.from_llm(
     llm=llm,
-    chain_type="stuff",
     retriever=retriever,
     return_source_documents=False,
-    chain_type_kwargs=chain_type_kwargs,
-    reduce_k_below_max_tokens=True,
     verbose=True,
 )
 
@@ -83,4 +78,4 @@ with gr.Blocks(theme='gstaff/sketch') as demo:
 
     msg.submit(respond, [msg, chatbot], [msg, chatbot])  
     clear.click(lambda: None, None, chatbot, queue=False)  
-demo.launch(debug=True)
+demo.launch(debug=True)