Compatible for drupal 10 onwards

Problem/Motivation

Doesn't work with drupal 10

Steps to play

Problem with class AlienAliasTwigExtension extends \Twig_Extension {

Proposed resolution

replace
use Twig\Extension\AbstractExtension;
use Twig\TwigFunction;

class AlienAliasTwigExtension extends AbstractExtension {

and on line 47
new TwigFunction('alien_alias_url', [$this, 'alienAliasUrl']),

Remaining tasks

Sorry I'm new to this.

Greetings I hope it works