Rviz Error in Examples U1-3 and U1-4

Hi,

I have got an error in Examples U1-3 and U1-4 in Rviz under the “LaserScan” display where the topic to be displayed is “/front/scan”. The error message is “For frame [front_laser]: Frame [front_laser] does not exist”. Any clue, how to fix this?

Thanks

Hello @Mohamed_Tolba ,

Are you still having this issue? I just tested the course and it seems to be working ok for me: