Cannot locate node of type [hector_mapping]

[PhlpGr]

I have installed Ros Noetic under Ubuntu 20.04.3 LTS. With the Slamtec RPLIDAR A1 I can start the Rviz without any problems. After cloning the reposetory in "/home/ubuntu/catkin_ws/src" and running "roslaunch rplidar_ros rplidar.launch" in terminal 1 and "roslaunch hector_slam_launch tutorial.launch" in terminal 2 the following errors occur:

'''
process[rviz-1]: started with pid [5194]
ERROR: cannot launch node of type [hector_mapping/hector_mapping]: Cannot locate node of type [hector_mapping] in package [hector_mapping]. Make sure file exists in package path and + is set to executable (chmod +x)
process[base_to_laser_broadcaster-3]: started with pid [5195]
ERROR: cannot launch node of type [hector_trajectory_server/hector_trajectory_server]: Cannot locate node of type [hector_trajectory_server] in package [hector_trajectory_server]. Make sure file exists in package path and permission is set to executable (chmod +x)
ERROR: cannot launch node of type [hector_geotiff/geotiff_node]: Cannot locate node of type [geotiff_node] in package [hector_geotiff]. Make sure file exists in package path and permission is set to executable (chmod +x)
'''

But with the roscd command I can reach all areas.

The Rviz gui starts but does not create a map (also no measuring points are displayed). The application also shows a Global Status Error.

What can I do to start the tutorial , that a map is created?

[RajithAshok]

Hi @PhlpGr , I'm using ROS Melodic on Ubuntu 18.04 and facing the same error while running the command "roslaunch hector_slam_launch tutorial.launch". If you have already solved the error, your insights on the same will be very helpful.
Thank you

[Maleby]

Hello, I am using ROS Noetic and I am having the same issue. I would appreciate if someone has an idea on how to solve this!

[RajithAshok]

Hi @Maleby , I solved the issue with the below command

catkin_make --only-pkg-with-deps <target_package>

Make sure all the files inside the packages are executable and run this command for all the packages individually.
For more info visit: how-to-build-just-one-package-using-catkin_make

Hope this helps.

[Maleby]

Hello @RajithAshok I had an issue with my catkin_make. There was an error on qt5 files:

CMake Error at hector_slam/hector_geotiff/CMakeLists.txt:7 (find_package):
By not providing "FindQt5.cmake" in CMAKE_MODULE_PATH this project has
asked CMake to find a package configuration file provided by "Qt5", but
CMake did not find one.

Could not find a package configuration file provided by "Qt5" with any of
the following names:

Qt5Config.cmake
qt5-config.cmake

Add the installation prefix of "Qt5" to CMAKE_PREFIX_PATH or set "Qt5_DIR"
to a directory containing one of the above files. If "Qt5" provides a
separate development package or SDK, be sure it has been installed.

-- Configuring incomplete, errors occurred!
See also "/home/sahri/catkin_ws/build/CMakeFiles/CMakeOutput.log".
See also "/home/sahri/catkin_ws/build/CMakeFiles/CMakeError.log".
make: *** [Makefile:698: cmake_check_build_system] Error 1
Invoking "make cmake_check_build_system" failed

and I had to run these commands:

sudo apt-get install qtbase5-dev
sudo apt-get install qtdeclarative5-dev

After running the hector slam launch file everything worked fine! I appreciate your help!