I found that after a routine cron based automatic update of webmin, a newly created site couldnt load php. I found that it was due to php version 7. Apparently it was broken.
To change php version for new sites:
Virtualmin > System settings > Server templates > Default settings > Edit template section > Apache website > Default PHP version
To change for an individual server:
Virtualmin > Server configuration > PHP versions
If you get a message stating “This virtual server is using the mod_php execution mode for PHP, such does not allow per-directory version selection.”:
Joel G Mathew, known in tech circles by the pseudonym Droidzone, is an opensource and programming enthusiast.
He is a full stack developer, whose favorite languages are currently Python and Vue.js. He is also fluent in Javascript, Flutter/Dart, Perl, PHP, SQL, C and bash shell scripting. He loves Linux, and can often be found tinkering with linux kernel code, and source code for GNU applications. He used to be an active developer on XDA forums, and his tinkered ROMS used to be very popular in the early 2000s.
His favorite pastime is grappling with GNU compilers, discovering newer Linux secrets, writing scripts, hacking roms, and programs (nothing illegal), reading, blogging. and testing out the latest gadgets.
When away from the tech world, Dr Joel G. Mathew is a practising ENT Surgeon, busy with surgeries and clinical practise.