The method getName() does not exist on Sylius\Component\Resourc...el\TranslationInterface. It seems like you code against a sub-type of said class. However, the method does not exist in Sylius\Component\Resourc...del\AbstractTranslation or Sylius\Component\Product...lueTranslationInterface or spec\Sylius\Component\Re...del\ConcreteTranslation or Sylius\Component\Product...tOptionValueTranslation or AppBundle\Entity\BookTranslation or Sylius\Component\Product...tOptionValueTranslation. Are you sure you never get one of those?
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Ignorable by Annotation
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If this is a false-positive, you can also ignore this issue in your code via the ignore-call annotation