systemd - My custom service exits with status code 216/GROUP

I installed the following unit file for an Nodejs Express Server: [Unit] Description=Server for SpeedBot After=network.target [Service] ExecStart=/var/www/SpeedBot/server.js Restart=always User=nobody Group=nobody Environment=PATH=/usr/bin:/usr/local/bin Environment=NODE_ENV=production WorkingDirectory=/home/pi/SpeedBot/server.js [Install] WantedBy=multi-user.target When I run it and do: service speedbotserver status i get: ● speedbotserver.service - Server for SpeedBot Loaded: loaded (/etc/systemd/system/speedbotserver.service; disabled) Active: failed (Result: start-limit) since Thu 2017-06-29 01:31:18 UTC; 18h ago Process: 19189 ExecStart=/var/www/SpeedBot/server.js (code=exited, status=216/GROUP) Main PID: 19189 (code=exited, status=216/GROUP)