Issues Running ROS2-PX4 rtps


I’ve benn attemping to run a minimal example of the ROS2 - PX4
I tried to connect px4 and ros2 but there are nothing.

ubuntu version : 20.04
Installed ros2 : apt install
and installed px4 environment used scripts in px4 repository.

I tried to run example rtps sensor_combined.launch

first, run rtps gazebo : “make px4_sitl_rtps gazebo”
and in terminal run “micrortps_client start -t UDP”

and open new terminal, type “source ~/px4_ros_com_ros2/install/setup.bash” then run “micrortps_agent -t UDP”

and open new termianl, type “source ~/px4_ros_com_ros2/install/setup.bash” then run
"ros2 launch px4_ros_com sensor_combined_listener.launch

but nothing happens like picture