What about downloading the newest ZIP and create the service files manually as described in the howto?
wget http://dl.ubnt.com/unifi/5.10.19/UniFi.unix.zip
unzip UniFi.unix.zip
mv ./UniFi /opt
...
What about downloading the newest ZIP and create the service files manually as described in the howto?
wget http://dl.ubnt.com/unifi/5.10.19/UniFi.unix.zip
unzip UniFi.unix.zip
mv ./UniFi /opt
...