Update app.py

app.py

@@ -250,4 +250,4 @@ with gr.Blocks() as app:
     drop3.change(make_tree,[drop1,drop2,drop3],[drop4])
     ######################
     app.load(run,None,[drop1,html_im])
-app.launch()
+app.queue(default_concurrency_limit=10).launch()