bad-setting (Reason: Unit duplicati.service has a bad unit file setting.)

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1 
root@srv:/home# sudo systemctl restart duplicati.service
Failed to restart duplicati.service: Unit duplicati.service has a bad unit file setting.
See system logs and 'systemctl status duplicati.service' for details.
root@srv:/home# systemctl status duplicati.service
● duplicati.service
     Loaded: bad-setting (Reason: Unit duplicati.service has a bad unit file setting.)
     Active: inactive (dead)

Sep 06 10:26:18 srv.mydomain.com systemd[1]: duplicati.service: Service has no ExecStart=, ExecStop=, or SuccessAction=. Refusing.
Sep 06 10:26:18 srv.mydomain.com systemd[1]: /etc/systemd/system/duplicati.service:10: Assignment outside of section. Ignoring.
Sep 06 10:31:29 srv.mydomain.com systemd[1]: /etc/systemd/system/duplicati.service:10: Assignment outside of section. Ignoring.
Sep 06 10:31:29 srv.mydomain.com systemd[1]: duplicati.service: Service has no ExecStart=, ExecStop=, or SuccessAction=. Refusing.
Sep 06 10:31:29 srv.mydomain.com systemd[1]: /etc/systemd/system/duplicati.service:10: Assignment outside of section. Ignoring.
Sep 06 10:33:44 srv.mydomain.com systemd[1]: /etc/systemd/system/duplicati.service:10: Assignment outside of section. Ignoring.
Sep 06 10:33:44 srv.mydomain.com systemd[1]: duplicati.service: Service has no ExecStart=, ExecStop=, or SuccessAction=. Refusing.
Sep 06 10:33:54 srv.mydomain.com systemd[1]: /etc/systemd/system/duplicati.service:10: Assignment outside of section. Ignoring.
Sep 06 10:33:54 srv.mydomain.com systemd[1]: duplicati.service: Service has no ExecStart=, ExecStop=, or SuccessAction=. Refusing.
Sep 06 10:33:54 srv.mydomain.com systemd[1]: /etc/systemd/system/duplicati.service:10: Assignment outside of section. Ignoring.
2

Hello

What is your operating system and how did you install Duplicati ? these messages are not looking like coming from the official packages…