Hello.
I want to try "Make a map and navigate with it" in Tutorials, but I compiled,
$ source /opt/ros/hydro/setup.bash
$ roslaunch turtlebot_gazebo turtlebot_playground.launch
gazebo displayed only a bookshelf, a column and a turtlebot.
Errors are
Error [ModelDatabase.cc:408] Unable to download model[model://dumpster/meshes/dumpster.dae]
Error [SystemPaths.cc:371] File or path does not exist[""]
Error [Visual.cc:2072] No mesh specified
...etc
What do I have to do?
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