Fix checkbox label

app.py

@@ -175,7 +175,7 @@ with gr.Blocks(
                         use_ref_ca = gr.Checkbox(label="Using per-box attention to guide reference attention", show_label=False, value=True)
                     with gr.Tab("Generation"):
                         dpm_scheduler = gr.Checkbox(label="Use DPM scheduler (unchecked: DDIM scheduler, may have better coherence, recommend >=50 inference steps)", show_label=False, value=True)
-                        use_autocast = gr.Checkbox(label="Use FP16 Mixed Precision (faster but with slightly lower quality)" + " [enabled due to low GPU memory]" if low_memory else "", show_label=False, value=True, interactive=not low_memory)
+                        use_autocast = gr.Checkbox(label="Use FP16 Mixed Precision (faster but with slightly lower quality)" + (" [enabled due to low GPU memory]" if low_memory else ""), show_label=False, value=True, interactive=not low_memory)
                         fg_seed_start = gr.Slider(0, 10000, value=20, step=1, label="Seed for foreground variation")
                         fg_blending_ratio = gr.Slider(0, 1, value=0.1, step=0.01, label="Variations added to foreground for single object generation (0: no variation, 1: max variation)")
                         scale_boxes = gr.Checkbox(label="Scale bounding boxes to just fit the scene", show_label=False, value=False)