Unifi-7.5 release doesnt seem to support arm so I held the version at 7.4.
[Unit]
Description=Miniflux Feed Reader
After=network.target postgresql.service
[Service]
Type=simple
EnvironmentFile=/etc/miniflux.conf
User=miniflux
ExecStart=/usr/local/bin/miniflux
Restart=always
[Install]
WantedBy=multi-user.target