Migrate

XAMPP

PHP 7.4.29 https://www.apachefriends.org/download.html
install: https://hostadvice.com/how-to/how-to-install-xampp-on-windows-server-2022/

mediawiki php compatibility

https://www.mediawiki.org/wiki/Compatibility
not compatible with PHP 8
The latest stable branch of MediaWiki (1.38) runs on any version of PHP 7.3.19/7.4.3 and higher.
Manual upgrading https://www.mediawiki.org/wiki/Manual:Upgrading
If you are upgrading from MediaWiki 1.5 or newer to 1.35, you can upgrade in one step.

mediawiki

images https://www.mediawiki.org/wiki/Manual:Image_administration