Perms issue when compiling gsa

[happyharrysco1]

Hi i am attempting the build on debian 10.10.0 and all goes well until the compilation of gsa, it is failing on the step when it attempts to copy the gsad.service file to /lib/systemd/system/gsad.service

-- Up-to-date: /opt/gvm/etc/gvm/gsad_log.conf
-- Up-to-date: /opt/gvm/sbin/gsad
-- Installing: /lib/systemd/system/gsad.service
CMake Error at gsad/config/cmake_install.cmake:49 (file):
file INSTALL cannot copy file
"/opt/gvm/src/gsa/build/gsad/config/gsad.service" to
"/lib/systemd/system/gsad.service".
Call Stack (most recent call first):
gsad/cmake_install.cmake:55 (include)
cmake_install.cmake:43 (include)

make: *** [Makefile:74: install] Error 1