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why i had published camera topic but I don't get any message? #37

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lemon5254 opened this issue Dec 2, 2019 · 0 comments

lemon5254 commented Dec 2, 2019

when i command "roslaunch rrbot_gazebo rrbot_world.launch" , "rostopic list"
i got topic list like it.

but i command "rostopic echo " get "no messages received and simulated time is active."
so i cannot see any thing on rviz

i got a error like this

how can i solve it????
PS. i use ros-kinetic and gazebo 7.0.0

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