在按照ROS官方步骤操作，同时用Git管理整个过程，git clone的新catkin_ws报错如下：

CMake Error at /opt/ros/kinetic/share/catkin/cmake/catkin_package.cmake:302 (message):
catkin_package() include dir 'include' does not exist relative to
'/home/username/catkin_ws/src/beginner_tutorials'
Call Stack (most recent call first):
/opt/ros/kinetic/share/catkin/cmake/catkin_package.cmake:102 (_catkin_package)
beginner_tutorials/CMakeLists.txt:104 (catkin_package)