🇩🇰Denmark @achton

Thanks for this, appreciated!

I'm on latest Drupal 9.5.x - so unsupported core release.

That means that Symfony components are either version 4.4.x or 5.4.x, if you look at the official composer.json from core.

name     : symfony/config
descrip. : Helps you find, load, combine, autofill and validate configuration values of any kind
keywords : 
versions : * v4.4.44
released : 2022-07-20, 1 year ago

I still get this error with 9.3.11:

Fatal error: Declaration of Guzzle\Service\Loader\FileLoader::load(mixed $resource, ?string $type = null): mixed must be compatible with Symfony\Component\Config\Loader\LoaderInterface::load($resource, $type = null) in /var/www/vendor/fatal-error/guzzle-description-loader/src/FileLoader.php on line 27

achton → created an issue.