Fix bug permanently

app.py

@@ -25,7 +25,7 @@ def generate(*args):
         p.stdin.close()
         p.wait()
     model_path = f"{filename}.ply"
-    model.save_ply(model_path)
+    pc.save_ply(model_path)
     # model_path = None  # TODO
     return [video_path, model_path]
 
@@ -71,8 +71,7 @@ def main():
         
         gr.Markdown("## Examples")
         gr.Examples(fn=generate, inputs=inputs, outputs=[video, model],
-                    examples=[defaults], # cache_examples=True, examples_per_page=1
-                    )
+                    examples=[defaults], cache_examples=True, examples_per_page=1)
     return ui
 
 ui = main()