Could NOT find combined_robot_hw (missing: combined_robot_hw_DIR)

edit

Hi, I tried cloning the repository following the instruction on the master branch (https://github.com/xArm-Developer/xar...), however while doing catkin_make I am getting the following error, please help me through this. I feel like something is wrong with the controller package on their github.

```
-- Could NOT find combined_robot_hw (missing: combined_robot_hw_DIR)
-- Could not find the required component 'combined_robot_hw'. The following CMake error indicates that you either need to install the package with the same name or change your environment so that it can be found.
CMake Error at /opt/ros/noetic/share/catkin/cmake/catkinConfig.cmake:83 (find_package):
  Could not find a package configuration file provided by "combined_robot_hw"
  with any of the following names:

    combined_robot_hwConfig.cmake
    combined_robot_hw-config.cmake

  Add the installation prefix of "combined_robot_hw" to CMAKE_PREFIX_PATH or
  set "combined_robot_hw_DIR" to a directory containing one of the above
  files.  If "combined_robot_hw" provides a separate development package or
  SDK, be sure it has been installed.
Call Stack (most recent call first):
  xarm_ros/xarm_controller/CMakeLists.txt:12 (find_package)


-- Configuring incomplete, errors occurred!
See also "/home/akumar/catkin_ws/build/CMakeFiles/CMakeOutput.log".
See also "/home/akumar/catkin_ws/build/CMakeFiles/CMakeError.log".

```