Can not connect the Schunk lwa4p

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Can not connect to the Schunk lwa4p arm following the guide of schunk_canopen_driver. When i type in the command:

roslaunch schunk_canopen_driver move_to_home_position.launch

the output of the terminal shows:

    ROS_MASTER_URI=http://localhost:11311

process[schunk_canopen_node-1]: started with pid [6952]
WARNING: Logging Instance is null, did you initialize the logging framework?
You should initialize the logging framework at the beginning of your program. This will also enable setting the log level on the command line.
<2021-04-28 15:10:43.154> CanOpen(Info)::init: CAN Device was set to auto. 
[schunk_canopen_node-1] process has died [pid 6952, exit code 133, cmd /home/songshouan/lwa4p_ws/devel_isolated/schunk_canopen_driver/lib/schunk_canopen_driver/schunk_canopen_driver_move_home_node __name:=schunk_canopen_node __log:=/home/songshouan/.ros/log/cb71872e-a7f0-11eb-992a-1c666d93cfe2/schunk_canopen_node-1.log].
log file: /home/songshouan/.ros/log/cb71872e-a7f0-11eb-992a-1c666d93cfe2/schunk_canopen_node-1*.log
all processes on machine have died, roslaunch will exit
shutting down processing monitor...
... shutting down processing monitor complete
done

Can anyone tell me where the problem is！