An advanced yet user-friendly content management system, based on the full stack Symfony framework combined with a whole host of community bundles. It provides a full featured, multi-language CMS system with an innovative page and form assembling process, versioning, workflow, translation and media managers and much more.
Adding an Choice Input pagepart without required option it triggers an "Excepted an array" error from the Symfony ChoiceType. Removing this line https://github.com/Kunstmaan/KunstmaanBundlesCMS/blob/6.x/src/Kunstmaan/FormBundle/Form/ChoiceFormSubmissionType.php#L38 fixed the issue