By the introduction of the Symfony\Component\Cache\CacheItem
which is using a union-type declaration inside it will break the support for PHP lower than 8 already with v2.
Current Behavior
Using >=2.0 it will break with a php lower than v8 - so we are still on v7.4 and the union type of the symphony dependency breaks our code. You should update the min. stability to php>=8.0.0 thereby https://github.com/storyblok/storyblok-php-client/blob/master/composer.json#L9