Update app.py

app.py

@@ -44,7 +44,7 @@ def get_vectorstore(text_chunks):
 
 def get_conversation_chain(vectorstore):
     # llm = ChatOpenAI(model_name="gpt-3.5-turbo-16k")
-    llm = HuggingFaceHub(repo_id="google/flan-t5-xxl", huggingfacehub_api_token=hub_token, model_kwargs={"temperature":0.5, "max_length":512})
+    llm = HuggingFaceHub(repo_id="google/flan-t5-xxl", huggingfacehub_api_token=hub_token, model_kwargs={"temperature":0.5, "max_length":20})
 
     memory = ConversationBufferMemory(
         memory_key='chat_history', return_messages=True)