Only 1 argument return

app.py

@@ -133,7 +133,7 @@ with gr.Blocks(css=css) as demo:
         fn=infer,
         inputs=[prompt, negative_prompt, seed, randomize_seed,
                 width, height, guidance_scale, num_inference_steps],
-        outputs=[result, seed]
+        outputs=[result]
     )
 
 demo.queue().launch()