ros编译报错：catkin_package() include dir ‘include‘ does not exist……

ros编译时报错：
CMake Error at /opt/ros/melodic/share/catkin/cmake/catkin_package.cmake:305 (message):
catkin_package() include dir ‘include’ does not exist relative to
‘/home/username/catkin_ws1/src/pub_sub_test’

该错误出现原因为pub_sub_test中没有include文件夹，新建一个即可。