CMake Error at /opt/ros/humble/share/ament_cmake_python/cmake/ament_python_install_package.cmake:66 (message):
  ament_python_install_package() the Python package folder
  '/home/guoch/test_ws/src/gc_bringup/gc_bringup' doesn't contain an
  '__init__.py' file
Call Stack (most recent call first):
  /opt/ros/humble/share/ament_cmake_python/cmake/ament_python_install_package.cmake:39 (_ament_cmake_python_install_package)
  CMakeLists.txt:25 (ament_python_install_package)