Errno2 xml syntax in launch file
when i launch gazebo_worlds/empty_worlds via cmd it starts but with a launch file below: <launch> <include file="$(find gazebo_worlds)/empty_world.launch"/> </launch>
it shows following error: while processing /opt/ros/electric/stacks/simulator_gazebo/gazebo_worlds/empty_world.launch: Invalid roslaunch XML syntax: [Errno 2] No such file or directory: u'/opt/ros/electric/stacks/simulator_gazebo/gazebo_worlds/empty_world.launch'