Fatal error: Uncaught exception Error with message Function name must be a string thrown in system/modules/efg/forms/ExtendedForm.php on line 417

#0 system/modules/core/classes/Hybrid.php(239): Efg\ExtendedForm->compile()
#1 system/modules/core/forms/Form.php(84): Contao\Hybrid->generate()
#2 system/modules/core/library/Contao/Controller.php(484): Contao\Form->generate()
#3 system/modules/core/modules/ModuleArticle.php(213): Contao\Controller::getContentElement()
#4 system/modules/tags/modules/ModuleArticle.php(26): Contao\ModuleArticle->compile()
#5 system/modules/core/modules/Module.php(287): Aurealis\ModuleArticle->compile()
#6 system/modules/core/modules/ModuleArticle.php(67): Contao\Module->generate()
#7 system/modules/core/library/Contao/Controller.php(417): Contao\ModuleArticle->generate()
#8 system/modules/core/library/Contao/Controller.php(277): Contao\Controller::getArticle()
#9 system/modules/core/pages/PageRegular.php(133): Contao\Controller::getFrontendModule()
#10 system/modules/core/controllers/FrontendIndex.php(285): Contao\PageRegular->generate()
#11 index.php(20): Contao\FrontendIndex->run()
#12 {main}