Worker sent code 139 when trying to add a point on the web demo

When I attempt to add a point in the web demo, an error occurs. I've deployed both the frontend and backend locally on my server (not using Docker) and access the demo via LAN on my desktop.

I've tried debugging myself and found that the network connection works well; the `frameIndex` and `points` are successfully sent to the backend and processed by `SAM2VideoPredictor`. However, when running the `add_new_points_or_box` method in `SAM2VideoPredictor`, the code crashes during `self._run_single_frame_inference()`. Unfortunately, no exceptions are thrown, so I'm struggling to determine the cause of the crash.

Why this might be happening or suggest some possible approaches to debug this issue further? Thank you all!