The puzzle `1448-65ca5ec2` from #1448 has to be resolved: https://github.com/php-coder/mystamps/blob/2f40baae75da2a2b63ef9cae739569f7dcae6d90/src/main/java/ru/mystamps/web/feature/series/AddSimilarSeriesForm.java#L39-L39 The puzzle was created by Slava Semushin on 21-Jun-20.