ROS-Qt project issue

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Hello All!
I am currently working on building a qt app for ROS Melodic. The app's purpose is to send commands to a mobile robot for movement. I am following this blogpost for reference. After creating the "qtros" project in my catkin workspace, when I try to open the project in my qtcreator, the parsing of the CMakeLists.txt file fails, giving this message

Could NOT find qt_build (missing: qt_build_DIR) Could not find the required component 'qt_build'. 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/melodic/share/catkin/cmake/catkinConfig.cmake:83 (find_package):   Could not find a package configuration file provided by "qt_build" with any   of the following names:

    qt_buildConfig.cmake
    qt_build-config.cmake

  Add the installation prefix of "qt_build" to CMAKE_PREFIX_PATH or set "qt_build_DIR" to a directory containing one of the above files.  If "qt_build" provides a separate development package or SDK, be sure it has   been installed. Call Stack (most recent call first):   CMakeLists.txt:13 (find_package)


Configuring incomplete, errors occurred! See also "/tmp/QtCreator-XzAWGc/qtc-cmake-yqSteIho/CMakeFiles/CMakeOutput.log". See also "/tmp/QtCreator-XzAWGc/qtc-cmake-yqSteIho/CMakeFiles/CMakeError.log". CMake Project parsing failed.

I tried opening a simple project file with a roscpp dependency too, it gives me this message

Could NOT find roscpp (missing: roscpp_DIR)
Could not find the required component 'roscpp'. 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/melodic/share/catkin/cmake/catkinConfig.cmake:83 (find_package):
  Could not find a package configuration file provided by "roscpp" with any
  of the following names:

    roscppConfig.cmake
    roscpp-config.cmake

  Add the installation prefix of "roscpp" to CMAKE_PREFIX_PATH or set
  "roscpp_DIR" to a directory containing one of the above files.  If "roscpp"
  provides a separate development package or SDK, be sure it has been
  installed.
Call Stack (most recent call first):
  CMakeLists.txt:10 (find_package)


Configuring incomplete, errors occurred!
See also "/home/aditya/Codeworks/ROS/catkin_ws/src/beginner_tutorials/CMakeFiles/CMakeOutput.log".
See also "/home/aditya/Codeworks/ROS/catkin_ws/src/beginner_tutorials/CMakeFiles/CMakeError.log".
CMake Project parsing failed.

Please can anyone help me solve this issue? And if u have any other verified resources that does the same thing, it will be much appreciated! Thanks!