Sylius\Component\Core\Model\Product::getMainTaxon() returns proxy insead of Taxoninterface - sylius

Question

getMainTaxon() returns Proxy instead of TaxonInterface
I am doing migration from sylius 1.1 to sylius 1.5. Everything works fine except this error. I have no idea what should i do with this error.
My _sylius.yaml contains these entries:
sylius_product:
resources:
product:
classes:
repository: App\Repository\ProductRepository
model: App\Entity\Product
controller: App\Controller\ProductController
translation:
classes:
model: App\Entity\ProductTranslation
sylius_taxonomy:
resources:
taxon:
classes:
repository: App\Repository\TaxonRepository
model: App\Entity\Taxon
My doctrine.yaml looks like this:
doctrine:
dbal:
driver: 'pdo_mysql'
server_version: '5.7'
charset: UTF8
url: '%env(resolve:DATABASE_URL)%'
orm:
auto_generate_proxy_classes: '%kernel.debug%'
auto_mapping: true
mappings:
App:
is_bundle: false
type: yml
dir: '%kernel.project_dir%/config/doctrine'
prefix: 'App\Entity'
alias: App
Full error looks like this
Return value of Sylius\Component\Core\Model\Product::getMainTaxon() must be an instance of Sylius\Component\Core\Model\TaxonInterface or null, instance of Proxies__CG__\App\Entity\Taxon returned
Do you know what can cause this error and how to manage it?

Answer 1

finally I managed to solve this issue. Maybe it will help someone who migrates an application from legacy sylius.
In the past, I extended the Taxon entity and my Taxon.php looked like this
use Sylius\Component\Taxonomy\Model\Taxon as BaseTaxon;
class Taxon extends BaseTaxon {
The issue was I should have extended Sylius\Component\Core\Model\Taxon class so my entity file now looks like this
use Sylius\Component\Core\Model\Taxon as BaseTaxon;
class Taxon extends BaseTaxon {