FATAL] [1583476207.100462515, 885.930000000]: PID controller for dvrk/psm1/rev_joint could not be initialized. Check if the parameters have been loaded properly on the ROS parameter server.

[dbdxnuliba]

terminal1: roslaunch dvrk_gazebo dvrk_gazebo.launch
terminal 2: rosrun dvrk_gazebo_control dvrk_gazebo_control_node

when execute "rosrun dvrk_gazebo_control dvrk_gazebo_control_node"
terminal1: ocuur following err:

[FATAL] [1583476207.100462515, 885.930000000]: PID controller for dvrk/psm1/rev_joint could not be initialized. Check if the parameters have been loaded properly on the ROS parameter server.

[FATAL] [1583476207.100518922, 885.930000000]: PID controller for dvrk/psm1/rev_joint could not be initialized. Check if the parameters have been loaded properly on the ROS parameter server.

[FATAL] [1583476207.100561772, 885.930000000]: PID controller for dvrk/psm2/rev_joint could not be initialized. Check if the parameters have been loaded properly on the ROS parameter server.

[FATAL] [1583476207.100606770, 885.930000000]: PID controller for dvrk/psm3/rev_joint could not be initialized. Check if the parameters have been loaded properly on the ROS parameter server.

[FATAL] [1583476207.100655015, 885.930000000]: PID controller for dvrk/psm2/rev_joint could not be initialized. Check if the parameters have been loaded properly on the ROS parameter server.

[FATAL] [1583476207.100700187, 885.930000000]: PID controller for dvrk/psm3/rev_joint could not be initialized. Check if the parameters have been loaded properly on the ROS parameter server.