tack trace
#0 src\XF\Language.php(885): DateTime->__construct('@')
#1 src\XF\Language.php(872): XF\Language->getShortDateInternal(false)
#2 src\XF\Language.php(680): XF\Language->getShortDate(false)
#3 src\XF\Language.php(660): XF\Language->getDateTimeParts(false)
#4 src\addons\Snog\Forms\Entity\Question.php(519): XF\Language->dateTime(false)
#5 src\addons\Snog\Forms\Entity\Question.php(404): Snog\Forms\Entity\Question->getDateTimeAnswer('', 'title')
#6 src\addons\Snog\Forms\Service\Form\Submit.php(953): Snog\Forms\Entity\Question->getTitleAnswer('')
#7 src\addons\Snog\Forms\Service\Form\Submit.php(310): Snog\Forms\Service\Form\Submit->processAnswer(Object(Snog\Forms\Entity\Question), '', false)
#8 src\XF\Service\ValidateAndSavableTrait.php(19): Snog\Forms\Service\Form\Submit->_validate()
#9 src\addons\Snog\Forms\Pub\Controller\Form.php(285): Snog\Forms\Service\Form\Submit->validate(NULL)
#10 src\XF\Mvc\Dispatcher.php(362): Snog\Forms\Pub\Controller\Form->actionSubmit(Object(XF\Mvc\ParameterBag))
#11 src\XF\Mvc\Dispatcher.php(264): XF\Mvc\Dispatcher->dispatchClass('Snog\\Forms:Form', 'Submit', Object(XF\Mvc\RouteMatch), Object(Snog\Forms\Pub\Controller\Form), NULL)
#12 src\XF\Mvc\Dispatcher.php(121): XF\Mvc\Dispatcher->dispatchFromMatch(Object(XF\Mvc\RouteMatch), Object(Snog\Forms\Pub\Controller\Form), NULL)
#13 src\XF\Mvc\Dispatcher.php(63): XF\Mvc\Dispatcher->dispatchLoop(Object(XF\Mvc\RouteMatch))
#14 src\XF\App.php(2826): XF\Mvc\Dispatcher->run()
#15 src\XF.php(806): XF\App->run()
#16 index.php(23): XF::runApp('XF\\Pub\\App')
#17 {main}