Hi all,
I am trying to use the navigation package, and I've exactly followed the
tutorial from http://www.ros.org/wiki/navigation/Tutorials/RobotSetup
But I was stuck in the move_base.launch file mentioned in the tutorial.
Below is the error I got:
load_parameters: unable to set parameters (last param was
[/move_base/global_costmap/laser_scan_sensor/clearing=True]): cannot marshal
None unless allow_none is enabled
My move_base.launch is exactly the same as the tutorial:
If i remove the last three lines, it worked through (It wont be functioning
correctly of course). I deleted the three lines below:
BTW, I have a simple question that how we set the starting location of the
robot in the map?
Thanks for your time.
Chris
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