Add a new error code and use Symfony's constants for HTTP codes
Add a new error code and use Symfony's constants for HTTP codes

IAmJulianAcosta/jsonapi-laravel,echo-it/laravel-jsonapi,mfn/laravel-jsonapi,ninjapenguin/laravel-jsonapi,dronemill/laravel-jsonapi,egeriis/laravel-jsonapi,jthoms1/laravel-jsonapi