Interesting: https://developers.elementor.com/elementors-roadmap-to-upgrade-php-versions/
Firstly:
If your server continues to use older PHP versions when Elementor raises the minimum required PHP version, your website will remain functional. However, as mentioned above, you won’t be able to upgrade to newer Elementor and WordPress versions.
Elementor
And:
We strongly encourage upgrading from older and unsupported PHP versions. This will not only enhance the security and performance of your site but also ensure compatibility with the newest versions of Elementor and WordPress.
Elementor
Well… it’s hard. I have several websites using a newer WP version than 6.3.2 having issues with the most recent Elementor version and PHP 8.x.
So updating to PHP 8.x using Elementor breaks sites, even though it is recommended. I don’t get it.
Solution for me (terrible, but don’t have a better one for now):
Downgrade to PHP 7.4 while using the newest versions of WP and Elementor.
If somebody comes up with a better (working) solution, please feel free to share. Thanks a lot.
PS: https://www.ads-software.com/support/topic/report-a-bug-version-3-17-3-php-8-2-10/ (“Elementor is not yet compatible with the PHP 8+ version.”)