Twig\Error\RuntimeError

Line 3 of /kunden/106673_1050/rp-hosting/250/557/kirby/site/templates/blocks/block--issuu.html.twig

Key "background" for array with keys "0" does not exist.

<div class="block-issuu__wrapper wrapper-generic">
    <div class="block-issuu">
        <iframe allowfullscreen allow="fullscreen" style="border:none;width:100%;height:{{ block.height }}px;" src="//e.issuu.com/embed.html?backgroundColor={{ block.backgroundColor.yaml['background']|replace({'#': '%23'}) }}&backgroundColorFullscreen={{ block.backgroundColorFullscreen.yaml['background']|replace({'#': '%23'}) }}&d={{ block.publicationID }}&hideIssuuLogo=true&u={{ block.issuuUser }}"></iframe>
    </div>
</div>