Version: 2.4.x
Bug Description
composer.json allows nette/utils ~3.0.0, but it's not compatible because of at leaset one missing return type:
Fatal error: Declaration of Nette\Application\Routers\RouteList::offsetSet($index, $route) must be compatible with Nette\Utils\ArrayList::offsetSet($index, $value): void
Possible Solution
Probably the only way out of this is to remove nette/utils 3.0 from allowed dependencies.