Update app.py

app.py

@@ -511,6 +511,10 @@ with gr.Blocks(delete_cache=(600, 600), js=js_func) as demo:
     #     outputs=[image_prompt, do_preprocess],
     # )
     sketch_btn.click(
+        get_seed,
+        inputs=[randomize_seed, seed],
+        outputs=[seed],
+    ).then(
         preprocess_image,
         inputs=[image_prompt, prompt, negative_prompt, style, num_steps, guidance_scale, controlnet_conditioning_scale],
         outputs=[image_prompt],