Recently Pi Hole issued an update to there web front end, unfortunately every time I ran the command pihole -up I was getting an error message:
Unable to find remote helper for 'https'
I was struggling to find any help on the web about this error but stumbled on an old article regarding git cloning failing in a similar way, knowing that Pi Hole uses git I ran the following commands:
sudo apt-get remove git
and this command to re-install git and any missing components:
sudo apt-get install git-all
After this I re-issued the command pihole -up and was successfully able to update it to the latest.
pi@pihole:~ $ pihole -up [i] Checking for updates... [i] Pi-hole Core: up to date [i] Web Interface: update available [i] FTL: up to date
Hey Presto!