Update app.py

app.py

@@ -351,7 +351,6 @@ with gr.Blocks(css=css) as demo:
 
     demo.unload(cleanup)
 
-demo.queue(default_concurrency_limit=1,        # ≤ 1 worker per event
-           max_size=20)                        # optional: allow 20 waiting jobs
+demo.queue()
 
 demo.launch(share=True)