Update app.py

app.py

@@ -79,6 +79,7 @@ with gr.Blocks() as demo:
             gr.Image(label="Generated Minecraft Skin Image Asset"),
             gr.Model3D(clear_color=[0.0, 0.0, 0.0, 0.0],  label="3D Model")
         ]
+        submit_btn = gr.Button("Submit")
         submit_btn.click(
             run_inference,
             inputs,