rns-map.service have absolute path to a user called user

[Ztrby]

user=user
WorkingDirectory=/home/user/
ExecStart=/home/user/rns-map/venv/bin/python rns_map.py
as a absolute path to a user named user, it will fail on a system with another username

[fotografm]

Indeed. That needs to be replaced by $USER at some point.