How do I make signalK server load at boot?

[Sailoog]

I've got a RP3+ with OP2.0. Signal K service doesn't start.

I followed the advises above:

pi@openplotter:/etc/systemd/system $ sudo systemctl start signalk.service
pi@openplotter:/etc/systemd/system $ sudo systemctl start signalk.socket
pi@openplotter:/etc/systemd/system $ sudo systemctl enable signalk.service
pi@openplotter:/etc/systemd/system $ sudo systemctl enable signalk.socket
pi@openplotter:/etc/systemd/system $ sudo systemctl status signalk.service
* signalk.service
  Loaded: loaded (/etc/systemd/system/signalk.service; enabled; vendor preset: enabled)
  Active: failed (Result: exit-code) since Fri 2020-01-03 11:13:22 CET; 1min 44s ago
Main PID: 1459 (code=exited, status=127)

Jan 03 11:13:22 openplotter systemd[1]: signalk.service: Service RestartSec=100ms expired, scheduling restart
Jan 03 11:13:22 openplotter systemd[1]: signalk.service: Scheduled restart job, restart counter is at 5.
Jan 03 11:13:22 openplotter systemd[1]: Stopped signalk.service.
Jan 03 11:13:22 openplotter systemd[1]: signalk.service: Start request repeated too quickly.
Jan 03 11:13:22 openplotter systemd[1]: signalk.service: Failed with result 'exit-code'.
Jan 03 11:13:22 openplotter systemd[1]: Failed to start signalk.service.

Are you on Raspbian?
Have you installed openplotter-signalk-installer from openplotter-settings? any error during installation?
Do you have latest versions?

If you want and out of the box system use these images: https://nx8035.your-storageshare.de/s/sL9doDML7P4CQDo