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The error ERROR: cannot launch node of type [laser_mapper/laser_mapper_node]: can't locate node [laser_mapper_node] in package [laser_mapper]' seems to be regarding build/finding the nodelaser_mapper_node. Make sure the packagelaser_mapperis built and sourced, and check if you can runrosrun laser_mapper laser_mapper_node`

The error ERROR: cannot launch node of type [laser_mapper/laser_mapper_node]: can't locate node [laser_mapper_node] in package [laser_mapper]' [laser_mapper]seems to be regarding build/finding the nodenode laser_mapper_nodelaser_mapper_node. Make sure the packagepackage laser_mapperlaser_mapper is built and sourced, and check if you can runrun rosrun laser_mapper laser_mapper_node`laser_mapper_node