Update app.py

app.py

@@ -170,6 +170,8 @@ with gr.Blocks(css=custom_css, title="Reka Flash 3") as demo:
         js=js
     )
 
-demo.queue(concurrent_count=1)
+# Enable queuing without any parameters
+demo.queue()
 
-demo.launch()
+# Launch the demo with max_concurrency set to 1
+demo.launch(max_concurrency=1)