Update app.py

app.py

@@ -232,6 +232,8 @@ with gr.Blocks() as demo:
         mesh_simplify = gr.Slider(0.9, 0.98, label="Simplify", value=0.95, step=0.01)
         texture_size = gr.Slider(512, 2048, label="Texture Size", value=1024, step=512)
 
+    output_buf = gr.State()
+    
     # Event handlers
     demo.load(start_session)
     demo.unload(end_session)