Update app.py

app.py

@@ -364,7 +364,7 @@ with gr.Blocks(css=css) as demo:
                 overlap_left, overlap_right, overlap_top, overlap_bottom],
         outputs=[result, preview_image],
     ).then(
-        fn=lambda x, history: update_history(x[1], history),
+        fn=lambda x, history: update_history(x, history),
         inputs=[result, history_gallery],
         outputs=history_gallery,
     ).then(