forgot 1 missing arg

app.py

@@ -285,7 +285,7 @@ with gr.Blocks(title="MultiTalk Inference") as demo:
 
     submit_btn.click(
         fn=infer,
-        inputs=[prompt_input, image_input, audio_input_spk1, sample_steps],
+        inputs=[prompt_input, image_input, audio_input_spk1, audio_input_spk2, sample_steps],
         outputs=output_video
     )