Changes in Laravel 9.32 broke the way laravel-dumper registered custom casters. This release registers casters before Laravel boots to get around that change. Unfortunately, until laravel/framework#49402 gets merged, this change will only work for some classes.
There should be no backwards-incompatible changes in this release, but I'm marking it as 2.0 because this change does mean that userland custom casters are no longer supported.