Update app.py

app.py

@@ -134,7 +134,7 @@ def gradio_answer(chatbot, chat_state, img_list, num_beams, temperature):
                               num_beams=1,
                               temperature=temperature,
                               max_new_tokens=240,
-                              max_length=512)[0]
+                              max_length=511)[0]
     chatbot[-1][1] = llm_message
     print(chat_state.get_prompt())
     print(chat_state)