Update app.py

app.py

@@ -106,7 +106,8 @@ with gr.Blocks() as app:
     
     gallery.select(update_selection, outputs=[prompt, selected_info, selected_state])
     prompt.submit(fn=run_lora, inputs=[prompt, selected_state], outputs=[result, refined_result])
-    post_process_button.click(fn=apply_post_processing, inputs=[refined_result, downscale_slider, limit_colors, grayscale, black_and_white], outputs=[post_processed_result])
+    post_process_button.click(fn=apply_post_processing, inputs=[refined_result, downscale_slider, limit_colors, enable_grayscale, black_and_white], outputs=[post_processed_result])
+
 
 app.queue(max_size=20, concurrency_count=5)
 app.launch()