Update app.py

app.py

@@ -395,4 +395,4 @@ with gr.Blocks(
 concurrency_count = 5
 logger.info(f"{concurrency_count=}")
 
-block.queue(concurrency_count=concurrency_count, max_size=18).launch(debug=True)
+block.queue(concurrency_count=concurrency_count, max_size=20).launch(debug=True)