php spark serve failed

I installed CodeIgniter.
I set Development Mode.

SETTING DEVELOPMENT MODE
"Type the following on the command line from the root of your project:"

I assume the root of my project is "ci-news" ?

"This creates a new folder, [b]ci-news[/b], which contains your application code, with CodeIgniter installed in the vendor folder."

This is was my result:
-----------------
C:\Users\Richard\ci-news>php spark serve
PHP Fatal error:  Uncaught Error: Class 'Locale' not found in C:\Users\Richard\ci-news\vendor\codeigniter4\framework\system\I18n\TimeTrait.php:74
Stack trace:
#0 C:\Users\Richard\ci-news\vendor\codeigniter4\framework\system\I18n\TimeTrait.php(115): CodeIgniter\I18n\Time->__construct()
#1 C:\Users\Richard\ci-news\vendor\codeigniter4\framework\system\HTTP\ResponseTrait.php(468): CodeIgniter\I18n\Time::now()

Thanks

You need to enable intl extension.
https://codeigniter4.github.io/CodeIgnit...extensions

ci-phpunit-test | CodeIgniter Testing Guide | CodeIgniter 3 to 4 Upgrade Helper

Would it be better if i just upgradedto PHP 8.2 or 8.3?

Use PHP 8.1 or later.

The end of life date for PHP 7.4 was November 28, 2022.
The end of life date for PHP 8.0 was November 26, 2023.
The end of life date for PHP 8.1 will be November 25, 2024.

ci-phpunit-test | CodeIgniter Testing Guide | CodeIgniter 3 to 4 Upgrade Helper