Update app.py

app.py

@@ -103,7 +103,7 @@ def load_llm_model():
 
 
 @st.cache_resource
-def load_conversational_qa_memory_retriever(llm_model):
+def load_conversational_qa_memory_retriever():
     question_generator = LLMChain(llm=llm_model, prompt=CONDENSE_QUESTION_PROMPT)
     doc_chain = load_qa_chain(llm_model, chain_type="stuff", prompt = PROMPT)
     memory = ConversationBufferWindowMemory(k = 3,  memory_key="chat_history", return_messages=True,  output_key='answer')