An error occurred trying to process items for field "Use Template Design:" (PHP Catchable Fatal Error: Argument 2 passed to Extension\Templavoila\Service\ItemProcFunc\StaticDataStructuresHandler::templateObjectItemsProcFunc() must be an instance of TYPO3\CMS\Backend\Form\FormEngine, instance of TYPO3\CMS\Backend\Form\FormDataProvider\TcaSelectItems given in /templavoila/Classes/Service/ItemProcFunc/StaticDataStructuresHandler.php line 155).
An error occurred trying to process items for field "Use Template Design:" (PHP Catchable Fatal Error: Argument 2 passed to Extension\Templavoila\Service\ItemProcFunc\StaticDataStructuresHandler::templateObjectItemsProcFunc() must be an instance of TYPO3\CMS\Backend\Form\FormEngine, instance of TYPO3\CMS\Backend\Form\FormDataProvider\TcaSelectItems given in /templavoila/Classes/Service/ItemProcFunc/StaticDataStructuresHandler.php line 155).