Update app.py

app.py

@@ -313,7 +313,7 @@ with gr.Blocks(theme=gr.themes.Citrus(), css=css) as app:
         fn=lambda img: generate_end_frame(img, "this image is a still frame from a movie. generate a new frame with what happens on this scene 5 seconds in the future"),
         inputs=[start_image],
         outputs=[end_image]
-    ).then(
+    ).success(
         fn=generate_video,
         inputs=ui_inputs,
         outputs=ui_outputs