XF 2.2 While am I getting this error on my acp.

[Austinrex]

While am I getting this error on my acp.

#0 src/XF/Container.php(228): XF\SubContainer\Widget->XF\SubContainer\{closure}('online_list_onl...', Array, Object(XF\Container))
#1 src/XF/SubContainer/Widget.php(142): XF\Container->create('widget', 'online_list_onl...', Array)
#2 src/XF/Template/Templater.php(1934): XF\SubContainer\Widget->widget('online_list_onl...', Array)
#3 internal_data/code_cache/templates/l1/s6/public/extra_footer.php(29): XF\Template\Templater->renderWidget('online_list_onl...', Array, Array)
#4 src/XF/Template/Templater.php(1626): XF\Template\Templater->{closure}(Object(SV\StandardLib\XF\Template\Templater), Array, NULL)
#5 src/XF/Template/Templater.php(1655): XF\Template\Templater->renderTemplate('extra_footer', Array)
#6 internal_data/code_cache/templates/l1/s6/public/PAGE_CONTAINER.php(1532): XF\Template\Templater->includeTemplate('public:extra_fo...', Array)
#7 src/XF/Template/Templater.php(1626): XF\Template\Templater->{closure}(Object(SV\StandardLib\XF\Template\Templater), Array, NULL)
#8 src/XF/Pub/App.php(562): XF\Template\Templater->renderTemplate('PAGE_CONTAINER', Array)
#9 src/XF/App.php(2131): XF\Pub\App->renderPageHtml('
    



    
    
    
        
...', Array, Object(XF\Mvc\Reply\View), Object(XF\Mvc\Renderer\Html))
#10 src/XF/Mvc/Dispatcher.php(402): XF\App->renderPage('
    



    
    
    
        
...', Object(XF\Mvc\Reply\View), Object(XF\Mvc\Renderer\Html))
#11 src/XF/Mvc/Dispatcher.php(58): XF\Mvc\Dispatcher->render(Object(XF\Mvc\Reply\View), 'html')
#12 src/XF/App.php(2326): XF\Mvc\Dispatcher->run()
#13 src/XF.php(488): XF\App->run()
#14 index.php(20): XF::runApp('XF\\Pub\\App')
#15 {main}
Request state
array(4) {
  ["url"] => string(1) "/"
  ["referrer"] => string(29) "https://platxy.com/whats-new/"
  ["_GET"] => array(0) {
  }
  ["_POST"] => array(0) {
  }
}