attachment — theme, light

attachment theme, light

theme and theme value are null

<amp-story-page-attachment
  layout="nodisplay"
  cta-image="https://s3.amazonaws.com/benetta.net/media/logo/ontomatica/ontomatica-symbol-w33-h36-color-1F64FF-bgnd-white.svg"
  cta-text=""
  data-title=""
>