Form 

Note

This ViewHelper is not available by default. It is only available if typo3/cms-form is installed and its namespace is imported.

Import its namespace {namespace formvh=TYPO3\CMS\Form\ViewHelpers\} in the Fluid file or xmlns:formvh="http://typo3.org/ns/TYPO3/CMS/Form/ViewHelpers/" in the opening HTML tag.