Basket/Form/FormErrorsMapper.php
public function apply(string $id, FormInterface $form): void
    {
        $id = self::PREFIX.$id;
        $data = $this->session->get($id, []);
        $this->session->remove($id);

        foreach ($data as [$target, $message]) {
            try {
                $target = $this->accessor->getValue($form, $target);
            } catch (RuntimeException $exception) {
                continue;
            }

            if ($target instanceof FormInterface) {
                $target->addError(new FormError($message));
            }
        }
    }
public function apply(string $id, FormInterface $form): void
    {
        $id = self::PREFIX.$id;
        $data = $this->session->get($id, []);
        $this->session->remove($id);

        foreach ($data as [$target, $message]) {
            try {
                $target = $this->accessor->getValue($form, $target);
            } catch (RuntimeException $exception) {
                continue;
            }

            if ($target instanceof FormInterface) {
                $target->addError(new FormError($message));
            }
        }
    }
{@inheritdoc}