Hello!

Passing objects as URI attributes to the ESI and SSI renderers has been deprecated and will be removed in Symfony 4.0. The inline fragment renderer should be used with object attributes.

I have an deprecation error when I try to render

{{ render_esi(controller('AppBundle:Default:widget', { 'data': { 'foo': 'bar' } })) }}

Is this an error in documentation and it's only possible to pass scalars?
https://github.com/symfony/symfony/blob/master/src/Symfony/Component/HttpKernel/Fragment/AbstractSurrogateFragmentRenderer.php#L100