Update app.py

app.py

@@ -219,6 +219,7 @@ model: https://huggingface.co/DionTimmer/controlnet_qrcode-control_v1p_sd15
             sampler,
         ],
         outputs=[result_image],
+        concurrency_limit=1
     )
 
     gr.Examples(
@@ -281,5 +282,5 @@ model: https://huggingface.co/DionTimmer/controlnet_qrcode-control_v1p_sd15
         cache_examples=True,
     )
 
-blocks.queue(concurrency_count=1, max_size=20,api_open=False)
+blocks.queue(max_size=20,api_open=False)
 blocks.launch(share=bool(os.environ.get("SHARE", False)), show_api=False)