Update app.py

app.py

@@ -462,7 +462,7 @@ with gr.Blocks() as demo:
 
             random_seed = gr.Number(label="Random Seed", value=-1, minimum=-1)
 
-            size_level = gr.Number(label="size level (recommend 512, 768, 1024, min 512)", value=512, minimum=512)
+            size_level = gr.Number(label="size level (recommend 512, 768, 1024, min 512)", value=512, minimum=512, maximum=1024)
 
             generate_btn = gr.Button("Generate")