Problem of launch file

[yulan0215]

Whe n I use the launch file: demo_aruco_markermap.launch
Resource not found: tuw_uvc
ROS path [0]=/opt/ros/melodic/share/ros
ROS path [1]=/home/kws/catkin_ws/src
ROS path [2]=/opt/ros/melodic/share
The traceback for the exception was written to the log file
Could you give me some ideas? Thank you~

[doctorseus]

At the moment the demo launch files have a dependency on the custom camera driver node found in https://github.com/tuw-robotics/tuw_uvc. So also this node needs to be build in order to run this demo file. Working on simplifying this for the next release.