turtlebot4-lite camera oakd-lite doesn't display any image in rviz

[Robot-LTL]

Understand?

None

[Robot-LTL]

after runing "ros2 launch turtlebot4_viz view_robot.launch.py", laser scan and camera are added on the display. Laser scan works well, but camera show no images, echo the topic color/preview/image, shows no msgs. I have checked the turtlebot4_bringup/ launch/, the defaule launch file ( my understanding) is oakd.launch.py, which uses oakd_pro, so I changed it to oakd_lite.yaml. however, rviz stillshows " no image" and the no message coming under the topic color/preview/image.