Thank you @Barry Staes for the update with regards the unipoller.
Two aspects though. Firstly I followed the instruction on github for unifi-poller. Mine has been working for a number of years now but it seems something has changed on InfluxDB. Now I have no data on my dashboard. I am also not using docker.
Is there a way to fix my issue without installing from the start. Looking at your very good instruction. it seems that the service has got different names as in unifi-poller.
Thanks
Lawrence