add force gradio version

app.py

@@ -1,6 +1,11 @@
+import os
+import gradio as gr
+print(f"Gradio version {gr.__version__}")
+if gr.__version__ != '4.28.2':
+    os.system("pip install gradio==4.28.2")
+    print(f"Gradio version: {gr.__version__}")
 
 import io
-import os
 
 import torch
 import json
@@ -8,7 +13,6 @@ import base64
 import random
 import numpy as np
 import pandas as pd
-import gradio as gr
 from pathlib import Path
 from PIL import Image
 
@@ -16,7 +20,6 @@ from plots import get_pre_define_colors
 from utils.load_model import load_xclip
 from utils.predict import xclip_pred
 
-print(f"Gradio version {gr.__version__}")
 DEVICE = "cuda" if torch.cuda.is_available() else "cpu"
 XCLIP, OWLVIT_PRECESSOR = load_xclip(DEVICE)
 XCLIP_DESC_PATH = "data/jsons/bs_cub_desc.json"