When I try to launch tutorial_9 on gazebo, ROS shows an error.
ERROR: cannot launch node of type [depthimage_to_laserscan/depthimage_to_laserscan]: depthimage_to_laserscan
ROS path =/opt/ros/kinetic/share/ros
ROS path =/home/husarion/ros_workspace/src
ROS path =/opt/ros/kinetic/share
Everything seems to look ok, and simulation starts, and ROSbot moves. What is this error, and if it can cause problems?