#0 system/modules/core/forms/FormRadioButton.php(137): __error(2, 'Invalid argumen...', '/var/www/vhosts...', 137, Array)
#1 system/modules/core/templates/forms/form_radio.html5(20): Contao\FormRadioButton->getOptions()
#2 system/modules/core/library/Contao/BaseTemplate.php(88): include('/var/www/vhosts...')
#3 system/modules/core/library/Contao/Widget.php(630): Contao\BaseTemplate->parse()
#4 system/modules/core/forms/Form.php(241): Contao\Widget->parse()
#5 system/modules/core/classes/Hybrid.php(239): Contao\Form->compile()
#6 system/modules/core/forms/Form.php(84): Contao\Hybrid->generate()
#7 system/modules/core/library/Contao/Controller.php(484): Contao\Form->generate()
#8 system/modules/core/modules/ModuleArticle.php(213): Contao\Controller::getContentElement(Object(Contao\ContentModel), 'main')
#9 system/modules/core/modules/Module.php(287): Contao\ModuleArticle->compile()
#10 system/modules/core/modules/ModuleArticle.php(67): Contao\Module->generate()
#11 system/modules/core/library/Contao/Controller.php(417): Contao\ModuleArticle->generate(false)
#12 system/modules/core/library/Contao/Controller.php(231): Contao\Controller::getArticle(Object(Contao\ArticleModel))
#13 system/modules/core/pages/PageRegular.php(137): Contao\Controller::getFrontendModule('0', 'Extended')
#14 system/modules/core/controllers/FrontendIndex.php(285): Contao\PageRegular->generate(Object(Contao\PageModel), true)
#15 index.php(20): Contao\FrontendIndex->run()
#16 {main}