Printing from Libre Office to a CUPS Server

I have a Raspberry Pi successfully running as a CUPS Server running V9 Stretch.

I can print from a Dell Laptop via Windows Office and other Windows Applications.
I can also print from a second Raspberry Pi (running Buster) using Firefox, Claws Email, Text Editor.

However, LibreOffice is installed on this second Raspberry Pi (running V9 Stretch) and cannot see any printers installed on the CUPS Server.

I have installed LibreOffice on the Dell Laptop and can print successfully.

Any ideas on what I am missing with regard to Libreoffice running under Debian Buster ?

Kind regards
Mike Pollard

Although some software locates and can print on the CUPS Server l read on the Debian Site that the CUPS Client should be installed. Have installed CUPS on my Client RPi I can see the printer. However, I get the error - could not start printer check configuration
But still tFirefox, Claws etc can print. Created the file client.conf and added the ServerName but still the same.

Reboot and we up and running. Phew ! I was regretting making a donation