我试图用ROS indigo实现跳跃动作，我使用了ROS leap_motion包附带的教程并按照他们的说法设置了所有内容，但是，每当我尝试执行命令行时：
roslaunch leap_motion sensor_sender.launch
显示
... logging to /home/juantelo/.ros/log/73513fa2-be34-11e7-86a9-1c394718bbbd/roslaunch-JuanTelo-11993.log
Checking log directory for disk usage. This may take awhile.
Press Ctrl-C to interrupt
Done checking log file disk usage. Usage is <1GB.
started roslaunch server http://JuanTelo:42806/
SUMMARY
========
PARAMETERS
* /rosdistro: indigo
* /rosversion: 1.11.21
NODES
/
sender_freq (leap_motion/sender.py)
ROS_MASTER_URI=http://localhost:11311
core service [/rosout] found
process[sender_freq-1]: started with pid [12011]
[sender_freq-1] process has died [pid 12011, exit code -11, cmd /home/juantelo/catkin_ws/src/leap_motion/scripts/sender.py _freq:=0.01 __name:=sender_freq __log:=/home/juantelo/.ros/log/73513fa2-be34-11e7-86a9-1c394718bbbd/sender_freq-1.log].
log file: /home/juantelo/.ros/log/73513fa2-be34-11e7-86a9-1c394718bbbd/sender_freq-1*.log
all processes on machine have died, roslaunch will exit
shutting down processing monitor...
... shutting down processing monitor complete
done
它关闭了。
任何人都知道如何解决这个问题？