build error

[shaashou]

CMake Error at /opt/ros/melodic/share/genmsg/cmake/genmsg-extras.cmake:151 (message): add_service_files() directory not found: /root/ros_ws/src/dual_ur3e/ur3e_dual_control/srv Call Stack (most recent call first): CMakeLists.txt:12 (add_service_files)

[shaashou]

There is no srv folder below the package at all