E: Package 'pgAdmin4' has no installation candidate ?

[richard coleman]

Hi All,

Running Kubuntu 18.04 here.  I followed the instructions to install
pgAdmin4 from this page:

https://wiki.postgresql.org/wiki/Apt

The result of running 'sudo apt-get install pgAdmin4' is;

'E: Package 'pgAdmin4' has no installation candidate'

How does one go about installing pgAdmin4 from a .deb?

Thanks,

rik.