On my system I often get the message:
```
Usage Exception: Unable to start notifications server because it is already running. Use `aphlict restart` to restart it.
```
`aphlict stop` followed by `aphlict start` (via systemd, see below) does not have any effect. I have to wait a long time, before I can successfully restart it.
I am using this systemd unit to manage it:
```
[Unit]
Description=Phabricator notification daemon
After=network.target mysql.service
[Service]
User=phd
Type=forking
ExecStart=/opt/phabricator/phabricator/bin/aphlict start
ExecStop=/opt/phabricator/phabricator/bin/aphlict stop
[Install]
WantedBy=multi-user.target
```