Under win10-ros-melodic, "rqt_image_view" shows nothing, but "ros topic list" can see "/image_raw" topic.

[HONGcalmJIN]

When I try to use rqt_iamge_view to get image under win10-ros-melodic environment, I close the firewall and with "rostopic list", I can see all topic correctly, however, when I try "rostopic echo /image_raw", nothing appeared, and "rqt_image_view" shows nothing, at the same time, another PC with Ubuntu18.04 can echo "/image_raw" and "rqt_image_view" can show image correctly. On the win10 PC, it can echo other topic and show correctly, except "/image_raw"topic. I wonder why and how to solve this problem.