PHP Error [4096]

Object of class WebComponent could not be converted to string (/home/gotowpthemes/public/gotowpthemes.com/public/app/view/layout/feature/FeaturePageDetailsView.php:16)

#0 /home/gotowpthemes/public/gotowpthemes.com/public/app/view/WebComponent.php(712): FeaturePageDetailsView->out()
#1 /home/gotowpthemes/public/gotowpthemes.com/public/app/view/WebComponent.php(712): WebComponent->out()
#2 /home/gotowpthemes/public/gotowpthemes.com/public/app/view/WebComponent.php(712): WebComponent->out()
#3 /home/gotowpthemes/public/gotowpthemes.com/public/app/view/template/HTMLTemplate.php(104): WebComponent->out()
#4 /home/gotowpthemes/public/gotowpthemes.com/public/app/controller/FeaturesController.php(71): HTMLTemplate->out()
#5 /home/gotowpthemes/public/gotowpthemes.com/public/app/controller/FeaturesController.php(19): FeaturesController->detailsAction()
#6 /home/gotowpthemes/public/gotowpthemes.com/public/app/web/WebApplication.php(21): FeaturesController->run()
#7 /home/gotowpthemes/public/gotowpthemes.com/public/app/web/WebApplication.php(13): WebApplication->runController()
#8 /home/gotowpthemes/public/gotowpthemes.com/public/app/application/Application.php(15): WebApplication->processRequest()
#9 /home/gotowpthemes/public/gotowpthemes.com/public/index.php(12): WebApplication->run()

Themes with Responsive Layout feature