fatal error: moveit_msgs/DisplayTrajectory.h: No such file or directory

[mfkenson]

Reproducing the issue

1. fresh installation of ubuntu 20.04
2. fresh installation of ROS noetic using https://github.com/wsnewman/learning_ros_setup_scripts/blob/master/install_ros_and_tools_noetic.sh

mkdir -p ~/ros_ws/src/
cd ~/ros_ws/src/
git clone --recursive https://github.com/wsnewman/learning_ros.git
git clone --recursive https://github.com/wsnewman/learning_ros_external_pkgs_noetic.git
cd ~/ros_ws/
rosdep install --from-paths src --ignore-src -r -y
catkin_make

catkin_make reported error below.

/home/kenson/ros_ws/src/learning_ros/Part_5/cartesian_planner/src/ur10_cart_move_as.cpp:28:9: fatal error: moveit_msgs/DisplayTrajectory.h: No such file or directory
   28 | #include<moveit_msgs/DisplayTrajectory.h>
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
compilation terminated.

[mfkenson]

Resolved after running sudo apt install ros-noetic-moveit.
Creating a PR for documenting the environment setup.