fix UI ersion

app.py

@@ -172,7 +172,7 @@ def extract_gaussian(state: dict, req: gr.Request) -> Tuple[str, str]:
     return gaussian_path, gaussian_path
 
 
-output_buf = gr.JSON()
+output_buf = gr.State()
 video_output = gr.Video(label="Generated 3D Asset", autoplay=True, loop=True, height=300)
 
 with gr.Blocks(delete_cache=(600, 600)) as demo:
@@ -219,7 +219,7 @@ with gr.Blocks(delete_cache=(600, 600)) as demo:
                 download_glb = gr.DownloadButton(label="Download GLB", interactive=False)
                 download_gs = gr.DownloadButton(label="Download Gaussian", interactive=False)  
     
-    output_buf = gr.JSON()
+    output_buf = gr.State()
 
     # Handlers
     demo.load(start_session)