Run CumulusMX as service on RaspberryPi

cumulusmx.service

[Unit]
Description=CumulusMX
Documentation=https://cumuluswiki.org/a/Main_Page
After=network-online.target

[Service]
User=root
Group=root
ExecStart=/usr/bin/mono-service -/home/pi/CumulusMX CumulusMX.exe -service
Type=forking
ExecStopPost=/bin/rm /tmp/CumulusMX.exe.lock

[Install]
WantedBy=multi-user.target




============
  - Edit the configuration above and change the path to match your Cumulus MX installation folder
	- Copy cumulusmx.service to your /etc/systemd/system/ folder
	- Cumulus can then be started and stopped with the following commands:
		> systemctl start cumulusmx
		> systemctl stop cumulusmx
	- Status and restart are available too:
		> systemctl restart cumulusmx
		> systemctl status cumulusmx
	- If you make a change to the unit file, you need to run the following command so that systemd re-reads your file:
		> systemctl daemon-reload
	- To have Cumulus start on reboot, issue the following command:
		> systemctl enable cumulusmx
	- Finally, to stop the service running on reboot, use the following:
		> systemctl disable cumulusmx

It doesn't work, it gives me those codes.
Previously I had a CumulusMX installation as a service that worked immediately and very easily but I can't find how I did it or where it came from.