Update app.py

app.py

@@ -341,5 +341,7 @@ with gr.Blocks(css=css) as demo:
 
     demo.unload(cleanup)
 
-demo.queue()
-demo.launch(share=True, ssr_mode=False)
+demo.queue(default_concurrency_limit=1,        # ≤ 1 worker per event
+           max_size=20)                        # optional: allow 20 waiting jobs
+
+demo.launch()