failed to drive pr2 robot on multi_level_map_demo gazebo
I followed pr2_simulator/Tutorials/MultiLeveMapWithRamps.
I use ROS electric to run
roslaunch pr2_gazebo_wg multi_level_map_demo.launch
rosrun pr2_teleop teleop_pr2_keyboard
But I can't move pr2 on teleop_pr2_keyboard node.
How to solve it?
Thank you~