Pthread set sched policy failed

Question

I am using ROS to control the Unitree A1,

But when I run the roslaunch command, this error keeps showing.

process[node_lcm_server_running-1]: started with pid [919816] Error: Pthread set sched policy failed. process[unitree_base_node-2]: started with pid [919817] [node_lcm_server_running-1] process has died [pid 919816, exit code 254, cmd /home/user/catkin_ws/devel/lib/unitree_base/lcm_server_running_node a1 highlevel __name:=node_lcm_server_running __log:=/home/user/.ros/log/114485b2-0e2f-11ed-9046-4b1a6b229934/node_lcm_server_running-1.log].

I've read the second log file while the first log isn't even made,

Error: Lock memory failed.

I think the error message is related to the first error message which is exit 254: pthread set sched policy failed.

Is there anybody who have experienced this error or the one similar to this?

Thanks in advance!