XF 2.2 i got this Accessed unknown getter 'verti_back' problem

[mc nabulsy]

Hello,

this server error appears in AP can you help fixing or knowing the resource of this error

InvalidArgumentException: Accessed unknown getter 'verti_back' on XF:Node[5] src/XF/Mvc/Entity/Entity.php:213

#0 src/XF/Mvc/Entity/Entity.php(125): XF\Mvc\Entity\Entity->get('verti_back')
#1 internal_data/code_cache/templates/l2/s5/public/thread_view.php(571): XF\Mvc\Entity\Entity->offsetGet('verti_back')
#2 src/XF/Template/Templater.php(1655): XF\Template\Templater->{closure}(Object(XF\Template\Templater), Array, Object(XF\Template\ExtensionSet))
#3 src/XF/Template/Template.php(24): XF\Template\Templater->renderTemplate('thread_view', Array)
#4 src/XF/Mvc/Renderer/Html.php(50): XF\Template\Template->render()
#5 src/XF/Mvc/Dispatcher.php(460): XF\Mvc\Renderer\Html->renderView('XF:Thread\\View', 'public:thread_v...', Array)
#6 src/XF/Mvc/Dispatcher.php(442): XF\Mvc\Dispatcher->renderView(Object(XF\Mvc\Renderer\Html), Object(XF\Mvc\Reply\View))
#7 src/XF/Mvc/Dispatcher.php(402): XF\Mvc\Dispatcher->renderReply(Object(XF\Mvc\Renderer\Html), Object(XF\Mvc\Reply\View))
#8 src/XF/Mvc/Dispatcher.php(60): XF\Mvc\Dispatcher->render(Object(XF\Mvc\Reply\View), 'html')
#9 src/XF/App.php(2487): XF\Mvc\Dispatcher->run()
#10 src/XF.php(524): XF\App->run()
#11 index.php(20): XF::runApp('XF\\Pub\\App')
#12 {main}

array(4) {
["url"] => string(48) "/threads/alyulm-almdlul-ualmbrrat-qra-nqdi.5969/"
["referrer"] => bool(false)
["_GET"] => array(0) {
}
["_POST"] => array(0) {
}
}

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