livox_loam question?

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i am trying to use livox_loam with my lidar(benewake_ce30c)

and i faced a big two problems!

1. when livox_loam subscribe my pointcloud data (soslab_sl1/pointcloud) and i always got intensity error

what is intensity?

1. normally when i use livox_loam with other rosbag files, it always displays odometry and path, but when i am trying use this livox_loam algorithm with my lidar, it is not moving from its base frame(i think), it's not moving, do any one know why?