if ($errors->count() > 0) {
    throw new ValidatorException($dto::class, $errors);
}

<?php
declare(strict_types = 1);

namespace App\Exception;

use App\Exception\interfaces\ClientErrorInterface;
use App\Exception\models\ValidatorError;
use Symfony\Component\Validator\ConstraintViolationInterface;
use Symfony\Component\Validator\ConstraintViolationListInterface;
use Symfony\Component\Validator\Exception\ValidatorException as BaseValidatorException;

class ValidatorException extends BaseValidatorException implements ClientErrorInterface
{
    public function __construct(string $target, ConstraintViolationListInterface $errors)
    {
        parent::__construct(
            json_encode(
                array_map(
                    static fn (ConstraintViolationInterface $error): ValidatorError =>
                        new ValidatorError($error, $target),
                    iterator_to_array($errors),
                ),
            ),
        );
    }

    public function getStatusCode(): int
    {
        return 400;
    }
}

<?php
declare(strict_types = 1);

namespace App\Exception\models;

use Stringable;
use Symfony\Component\Validator\ConstraintViolationInterface;

class ValidatorError
{
    public string | Stringable $message;
    public string $propertyPath;
    public string $target;
    public string | null $code;

    public function __construct(ConstraintViolationInterface $error, string $target)
    {
        $this->message = $error->getMessage();
        $this->propertyPath = $error->getPropertyPath();
        $this->target = str_replace('\\', '.', $target);
        $this->code = $error->getCode();
    }
}