When I put a 'text' option for a 'widget' option into a datetime type form.

$builder->add('created_at', 'datetime', array('widget'=>'text'))

Same issue with date_widget and time_widget.

Method "hour" for object "Symfony\Component\Form\FormView" does not exist in form_div_layout.html.twig at line 109

It works with a 'single_text' option, not with 'text'.