Most cloud service providers will allow zip archiving by default however there are a few that don’t. There can be many reasons why Duplicator may fail its ZipArchive test, in one of our cases we needed to install FPM for Apache from the command line.
First install php;
sudo apt-get install php7.2-zip
Enable conf FPM;
a2enconf php7.2-fpm
And finally reload the apache server;
systemctl reload apache2
Re-run the Duplicator checks and this time the ZipArchive should pass.