Update app.py

app.py

@@ -33,6 +33,6 @@ sandbox = gr.Interface.load(
     prompt = gr.Textbox(label="Prompt", show_label=False, max_lines=2, placeholder="Enter your prompt~", elem_id="input-prompt"), 
     description="""Demo for <a href="https://huggingface.co/stabilityai/stable-diffusion-2-1">AlStable</a> Stable Diffusion model.""",
     article=article,
-    api_key=API_KEY,
+    api_key=API_KEY
 )
-sandbox.queue(concurrency_count=30).launch()
+sandbox.queue(concurrency_count=20).launch()