Update app.py

app.py

@@ -1,7 +1,6 @@
 #!/usr/bin/env python
 # -*- coding: utf-8 -*-
 
-import os
 import random
 from pathlib import Path
 
@@ -360,14 +359,26 @@ with gr.Blocks(css="style.css", js=js_func, title="Scribble SDXL — Live") as d
     ]
     outputs = [image_slider]
 
-    # Manual run
+    # Manual run (with per-event concurrency limits)
     run_button.click(
-        fn=randomize_seed_fn, inputs=[seed, randomize_seed], outputs=seed, queue=False, api_name=False
-    ).then(lambda: None, inputs=None, outputs=image_slider).then(fn=run, inputs=inputs, outputs=outputs)
-
-    # Live re-inference (debounced)
+        fn=randomize_seed_fn,
+        inputs=[seed, randomize_seed],
+        outputs=seed,
+        queue=False,
+        api_name=False,
+        concurrency_limit=2,
+    ).then(
+        lambda: None, inputs=None, outputs=image_slider, concurrency_limit=2
+    ).then(
+        fn=run, inputs=inputs, outputs=outputs, concurrency_limit=2
+    )
+
+    # Live re-inference (debounced; per-event concurrency limits)
     for comp in [image, prompt, negative_prompt, style, num_steps, guidance_scale,
                  controlnet_conditioning_scale, seed, use_hed, use_canny]:
-        comp.change(fn=run, inputs=inputs, outputs=outputs, every=0.5, queue=True)
+        comp.change(
+            fn=run, inputs=inputs, outputs=outputs, every=0.5, queue=True, concurrency_limit=2
+        )
 
-demo.queue(concurrency_count=2, max_size=20).launch()
+# Enable queue without deprecated args
+demo.queue(max_size=20).launch()