Hello, I want o do the simple grasps and I copy the file from Mastering ROS code bundle

When i run

roslaunch moveit_simple_grasps grasp_generator_server.launch

I will get this message

SUMMARY
========

PARAMETERS
 * /moveit_simple_grasps_server/base_link: base_link
 * /moveit_simple_grasps_server/left_hand/end_effector_name: left_hand
 * /moveit_simple_grasps_server/left_hand/end_effector_parent_link: left_hand_graspin...
 * /moveit_simple_grasps_server/left_hand/grasp_pose_to_eef: [0.054, 0.0, 0.018]
 * /moveit_simple_grasps_server/left_hand/grasp_pose_to_eef_rotation: [0, 1.5708, 0]
 * /moveit_simple_grasps_server/left_hand/grasp_posture: [4.5, 4.5, 2.0]
 * /moveit_simple_grasps_server/left_hand/grasp_time_from_start: 4.0
 * /moveit_simple_grasps_server/left_hand/joints: ['hand_left_index...
 * /moveit_simple_grasps_server/left_hand/pregrasp_posture: [0.0, 0.0, 2.0]
 * /moveit_simple_grasps_server/left_hand/pregrasp_time_from_start: 4.0
 * /moveit_simple_grasps_server/right_hand/end_effector_name: right_hand
 * /moveit_simple_grasps_server/right_hand/end_effector_parent_link: right_hand_graspi...
 * /moveit_simple_grasps_server/right_hand/grasp_pose_to_eef: [0.054, 0.0, 0.018]
 * /moveit_simple_grasps_server/right_hand/grasp_pose_to_eef_rotation: [0, 1.5708, 0]
 * /moveit_simple_grasps_server/right_hand/grasp_posture: [4.5, 4.5, 2.0]
 * /moveit_simple_grasps_server/right_hand/grasp_time_from_start: 4.0
 * /moveit_simple_grasps_server/right_hand/joints: ['hand_right_inde...
 * /moveit_simple_grasps_server/right_hand/pregrasp_posture: [0.0, 0.0, 2.0]
 * /moveit_simple_grasps_server/right_hand/pregrasp_time_from_start: 4.0
 * /rosdistro: indigo
 * /rosversion: 1.11.19

NODES
  /
    moveit_simple_grasps_server (moveit_simple_grasps/moveit_simple_grasps_server)

auto-starting new master
process[master]: started with pid [7097]
ROS_MASTER_URI=http://localhost:11311

setting /run_id to 208bb01c-0b5d-11e6-aa8f-40a8f066d068
process[rosout-1]: started with pid [7110]
started core service [/rosout]
ERROR: cannot launch node of type [moveit_simple_grasps/moveit_simple_grasps_server]: can't locate node [moveit_simple_grasps_server] in package [moveit_simple_grasps]

If someone read and follow the tutorial in this book, can you helo me what's gong on?