Action server not generating any topics(goal, feedback etc) in ROS Basics in C++ uni 8

@staff In ROS Basics in C++, Unit 8, ROS Action client, i ran the below code to launch the action server, but topics (goal. feedback etc) are not generated.

roslaunch ardrone_as action_server.launch

Can i know why this is?

Hi Joseph,

I just tried the command and it works (see below). Try it in a different terminal, you might have the sourcing wrong in the one you are launching the server.


Hi @roalgoal, its working fine now after i logged back in, i dont know how though.

Because the sourcing is done every time we assign you a new VM.