Process has died when launch the desired motor task on gezebo

[289848771]

Hello! I encountered a problem when following the instruction of "Using simulated Baxter robot on Gazebo" and typing "roslaunch edlut_ros circle_trajectory.launch".When we execute this command, we show many of the same problems including the keywords"process has died".
I tried to find problems in the corresponding .py file in the past, but I did not find it. If you can help me find out what happened, then I will be very grateful to you.
There are several error showed in the terminal as followed:

[robot_enabler-2] process has died [pid 42646, exit code 1, cmd /home/xianze/EDLUT_BAXTER/edlut_ros_ws/src/edlut_ros/src/robot_enabler_node.py __name:=robot_enabler __log:=/home/xianze/.ros/log/eb352e72-b247-11ed-a3be-7d49c376acb0/robot_enabler-2.log]. log file: /home/xianze/.ros/log/eb352e72-b247-11ed-a3be-7d49c376acb0/robot_enabler-2*.log pro

[endpoint_publisher-21] process has died [pid 42739, exit code 1, cmd /home/xianze/EDLUT_BAXTER/edlut_ros_ws/src/edlut_ros/src/xyz_publisher.py __name:=endpoint_publisher __log:=/home/xianze/.ros/log/eb352e72-b247-11ed-a3be-7d49c376acb0/endpoint_publisher-21.log]. log file: /home/xianze/.ros/log/eb352e72-b247-11ed-a3be-7d49c376acb0/endpoint_publisher-21*.log

[MF-22] process has died [pid 42740, exit code 1, cmd /home/xianze/EDLUT_BAXTER/edlut_ros_ws/src/edlut_ros/src/RasterPlot.py __name:=MF __log:=/home/xianze/.ros/log/eb352e72-b247-11ed-a3be-7d49c376acb0/MF-22.log].