Update - I now have a site with nginx, php 7.4.1 and MariaDB 10 and both fileinfo and Imagick modules are loading.
I have discovered that php 8 does not have imagick extension in the ext folder - so adding it to php.ini obviously made no difference.
I found a useful WP plugin using phpinfo() which shows what modules are loaded - so it’s not a ‘false positive’.
My goal is to build and demo a site - so the site has to be problem free - Still no luck with SSL - I have found all the certificates and the conf file appears to point to the correct folder.
This doesn’t appear to be a new problem - now I have the correct terms to search with:
http://community.localwp.com/t/ssl-not-remaining-trusted/17294/7?u=essexpress
http://community.localwp.com/t/one-imported-site-works-the-other-doesnt/24113?u=essexpress