Every book has to be from a series?

I’ve just updated my OMP version to and when I try to publish a book, an error occurs. I have to choose a series for the book. But what should I do if that book belongs to any series?

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Hi @Gabi

At what stage does this occur for you? Perhaps you could provide a screenshot of the error, so we could get a better sense of what’s going on?

PKP Team