Hmm I guess the docs say that you need to add the dependency on property access yourself if you want to use that normalizer.

super bad.

Hmm, seems we could probably add a check for the class a better exception if it's not found. @dunglas there are quite a few optional deps inside symfony/serializer - what do you think about adding some more explicit checks when optional deps are used in the code?

Why not, but it's already explicitly stated in the suggest section of composer.json: https://github.com/symfony/symfony/blob/master/src/Symfony/Component/Serializer/composer.json#L45

We are throwing specific exception for such cases in other places in the framework, I think it's better than having a PHP error. By the way, the suggest section of composer.json is not really useful here.

Ok I'll open a PR to add exceptions.

Thanks guys!

friendly reminder @dunglas

@nicolas-grekas the related PR has already been merged #24563. Closing.