force gradio version in spaces

app.py

@@ -1,3 +1,5 @@
+import os
+
 import gradio as gr
 import spaces
 import torch
@@ -9,6 +11,9 @@ from huggingface_hub import hf_hub_download
 from controlnet_union import ControlNetModel_Union
 from pipeline_fill_sd_xl import StableDiffusionXLFillPipeline
 
+os.system("pip uninstall -y gradio")
+os.system("pip install gradio==4.42.0")
+
 MODELS = {
     "RealVisXL V5.0 Lightning": "SG161222/RealVisXL_V5.0_Lightning",
 }