Fixed systemd service

init/linux-systemd/smam.service

 
 [Service]
 Restart=on-failure
-; User smam's home directory is the directory where SMAM's server.js is found
+; Use a specific user
 User=smam
 Group=smam
+; Working directory
+WorkingDirectory=/etc/smam
 ; Start with NPM
-ExecStart=npm start
+ExecStart=/usr/bin/npm start
 
 [Install]
 WantedBy=multi-user.target