Fix nonexistent variable access in HTML transform codestent variable access in HTML transform code
Fix nonexistent variable access in HTML transform codestent variable access in HTML transform code

Fixes https://sentry.io/share/issue/0f0cc91816c14953a7fb73d0d4666624/.

Signed-off-by: Christoph Wurst <7abde52c298496fa169fb750f91f213a282142af@winzerhof-wurst.at>

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