I am a beginner in ROS.
I have a problem - I can't spawn my robot model into Gazebo. As in the title. When I use "roslaunch tortoise.launch' the Gazebo opens but it's just empty world, without robot. There is no errors or sth like that.
(I am reading a book about ROS, and all the code is just Ctrl-C Ctrl-V from it. So it's not my own code.)
This is my launch file. Named tortoise.launch in package tortoise:
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