Hi everyone, I am on a project that i use 8 laser sensors, when i use the laser scan matcher node, it shows:

Invalid number of rays: 8

[ WARN] [1454953329.523747083]: Error in scan matching

I searched for this error and i ended up with http://docs.ros.org/indigo/api/csm_ros/html/laser__data_8c_source.html How can i find this file and modify this file please?