Update app.py

app.py

@@ -25,8 +25,8 @@ llm = HuggingFaceHub(repo_id=repo_id,  # for StarChat
                                    "top_k": 50,
                                    "top_p": 0.95, "eos_token_id": 49155})
 
-chain = load_summarize_chain(llm, chain_type="stuff")
-#chain = load_summarize_chain(llm, chain_type="refine")
+#chain = load_summarize_chain(llm, chain_type="stuff")    #stuff模式容易导致出错：估计是超LLM的token限制所致
+chain = load_summarize_chain(llm, chain_type="refine")
 
 #llm = ChatOpenAI(temperature=0, model_name="gpt-3.5-turbo-16k")