Mediapipe Pose livestream segmentation causes Python to quit

[ccarmatic]

I am trying to run Mediapipe Pose in livestream mode

options = PoseLandmarkerOptions(
    base_options=BaseOptions(model_asset_path='pose_landmarker_full.task'),
    running_mode=VisionRunningMode.LIVE_STREAM,
    output_segmentation_masks=True,
    result_callback=print_result)

with PoseLandmarker.create_from_options(options) as pose:
    cap = cv2.VideoCapture(0)
    i = 0
    while (1):
        succes, image = cap.read()
        image = np.array(image)
        imgRGB = cv2.cvtColor(image, cv2.COLOR_BGR2RGB)
        mp_image = mp.Image(image_format=mp.ImageFormat.SRGB, data=imgRGB)
        pose.detect_async(mp_image,i)
        i += 1

however, if I try to output the segmentation mask, the Python interpreter quits without any error messages I have narrowed it down to this line

def print_result(result: PoseLandmarkerResult, output_image: mp.Image, timestamp_ms: int):

    alpha= result.segmentation_masks[0].numpy_view()

if that code is alpha= result.segmentation_masks , then Mediapipe will run and alpha is of type mediapipe.python._framework_bindings.image.Image object but if I wish to return the pixel data with .numpy_view() , it will cause Python to quit without any messages