can't find bag file when Loading a map and plan a trajectory in moveit

[HU-Yi-ming]

hi, when i watch you youtube video Loading a map and plan a trajectory in moveit for ardone
and I already edit the file sensor_points and sensor_manager.launch.xml
but I just run roslaunch drone_application for_simulated_map.launch
i got [point_clouds-1] process has died and rviz cannot be shown

[FATAL] [1536242812.771472629]: Error reading version line
process[move_group-8]: started with pid [6491]
process[rviz_hym_SVF15A17SCB_6404_3427737183256156755-9]: started with pid [6492]
[ WARN] [1536242812.902377304]: The root link base_link has an inertia specified in the URDF, but KDL does not support a root link with an inertia. As a workaround, you can add an extra dummy link to your URDF.
[ INFO] [1536242812.987940601]: Loading robot model 'quadrotor_hokuyo_utm30lx'...
[ INFO] [1536242813.075904945]: rviz version 1.11.19
[ INFO] [1536242813.076607498]: compiled against Qt version 4.8.6
[ INFO] [1536242813.076652947]: compiled against OGRE version 1.8.1 (Byatis)
[ INFO] [1536242813.132009580]: Publishing maintained planning scene on 'monitored_planning_scene'
[ INFO] [1536242813.144480178]: MoveGroup debug mode is ON
Starting context monitors...
[ INFO] [1536242813.144557560]: Starting scene monitor
[ INFO] [1536242813.149653680]: Listening to '/planning_scene'
[ INFO] [1536242813.149713358]: Starting world geometry monitor
[ INFO] [1536242813.156944355]: Listening to '/collision_object' using message notifier with target frame '/world '
[ INFO] [1536242813.173912944]: Listening to '/planning_scene_world' for planning scene world geometry
[ INFO] [1536242813.210453551]: Listening to '/camera/depth/points' using message filter with target frame '/world '
[ INFO] [1536242813.224425062]: Listening to '/attached_collision_object' for attached collision objects
Context monitors started.
[point_clouds-1] process has died [pid 6425, exit code 1, cmd /opt/ros/indigo/lib/rosbag/play --clock /home/ros/ardrone_ws/bags/small_world_selected.bag __name:=point_clouds __log:=/home/ros/.ros/log/7e577e5e-b1d9-11e8-a07f-b8763fc5403f/point_clouds-1.log].
log file: /home/ros/.ros/log/7e577e5e-b1d9-11e8-a07f-b8763fc5403f/point_clouds-1*.log