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답변 8개
  1. 10월 26일 오후 10:44

    Hello @Bhavana Dubey

    maybe there is a slight typo in your code (class name or method different for example). Could you please share your code (or a screenshot with us) ? 

    PS : we  never know... but make sure that you verify your challenge in the playground in which you have created your classes... 

    Eric

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