Update app.py

app.py

@@ -3,6 +3,7 @@
 import gradio as gr
 from diffusers import StableDiffusionXLPipeline, UNet2DConditionModel, EulerDiscreteScheduler, LCMScheduler, AutoencoderKL,DiffusionPipeline
 import torch
+from typing import Tuple
 import numpy as np
 from huggingface_hub import hf_hub_download
 from safetensors.torch import load_file