update app.py

app.py

@@ -2,9 +2,7 @@ import os
 import sys
 import cv2
 import time
-import tyro
 import json
-import kiui
 import tqdm
 import torch
 import mcubes
@@ -26,6 +24,9 @@ os.system("pip install git+https://github.com/NVlabs/tiny-cuda-nn/#subdirectory=
 os.system("pip install git+https://github.com/NVlabs/nvdiffrast")
 os.system("pip install git+https://github.com/3DTopia/threefiner")
 
+import tyro
+import kiui
+
 from ldm.models.diffusion.ddim import DDIMSampler
 from ldm.models.diffusion.plms import PLMSSampler
 from ldm.models.diffusion.dpm_solver import DPMSolverSampler