Question about CMake Error :83 (find_package): Could not find a package configuration file provided by "qt-build" --

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Hello! I'm a beginner and tring to make a package(node and message included). But when I execute catkin_make, following error message comes up.

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):
  thormang3_opc/thormang3_offset_tuner_client/CMakeLists.txt:10 (find_package)

I don't know what to do. Please help me. I'm using Ubuntu 18.04 and Melodic. Thanks in advance.