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Hi,

Welcome to the community!

Your issue is that you've not included a node to launch. The roslaunch syntax is:

rosrun <package name> <executable name>

So you've gotten the package name correct with turtlesim, but you're missing the actual node itself you're trying to run. For this demo, what you're looking for is:

rosrun turtlesim turtlesim_node

Happy ROSing

Hi,

Welcome to the community!

Your issue is that you've not included a node to launch. run. The roslaunch rosrun syntax is:

rosrun <package name> <executable name>name>

rosrun turtlesim turtlesim_nodeturtlesim_node