ROS 2 packages related to the carologistics gripping components to start the simulator type the command at terminal ros2 launch gripper_tf_simulator gripper_tf.launch.py in Rviz2 add TF to visualize the transformation after that run the action server by giving the command ros2 run gripper_tf_simulator gripper_action_server to test whether the server works you may run the action client ros2 run gripper_tf_simulator gripper_action_client