rclcpp::exceptions::ParameterNotDeclaredException what(): ROB_PARAM

[Ziriuzzz]

Hi, I'm building a simulation environment using your package. it has following issues.
When I launch ros2 launch irb1200_ros2_moveit2 irb1200_interface.launch.py or ros2 launch irb1200_ros2_moveit2 irb1200.launch.py, and then run the moveJ_action in ros2_action package, it shows

Then I look into ros2_RobotTrigger class, I think it is just for getting the planning group name such as "irb1200_arm" (I don't know if it is correct), then I directly give my_param the corresponding name

And then, there's an issue with move_group_interface = MoveGroupInterface(node2, my_param)

when I run my own package, it has the same issue
How could I solve this issue? Thanks a lot!