custom findoneby implementation ?

[ph1823]

Hi ! I have treid to implement custom findOneBy by separating me from your event class, but i get this error:

Cannot autowire service "App\Repository\Service\VPSRepository": argument "$encryptor" of method "__construct()" references interface "Ambta\DoctrineEncryptBundle\Encryptors\EncryptorInterface" but no such service exists. You should maybe alias this interface to the existing "ambta_doctrine_encrypt.encryptor" service.

How to implement custom findOneBy ? Thank for your help ! (function $this->get doest work)