[B6] [[Template core/front/global/navColumnItems is throwing an error.

Error: Call to a member function url() on null in /home/damien_prod/Internazionaleprod/public_html/applications/core/extensions/core/FrontNavigation/Tags.php:141
Stack trace:
#0 /home/damien_prod/Internazionaleprod/public_html/applications/core/sources/FrontNavigation/FrontNavigationAbstract.php(318): IPS\core\extensions\core\FrontNavigation\Tags->active()
#1 /home/damien_prod/Internazionaleprod/public_html/static/templates/core_front_global.php(12364): IPS\core\FrontNavigation\FrontNavigationAbstract->activeOrChildActive()
#2 /home/damien_prod/Internazionaleprod/public_html/system/Theme/SandboxedTemplate.php(68): IPS\Theme\class_core_front_global->mobileFooterBar()
#3 /home/damien_prod/Internazionaleprod/public_html/static/templates/core_front_global.php(8253): IPS\Theme\SandboxedTemplate->__call()
#4 /home/damien_prod/Internazionaleprod/public_html/system/Theme/SandboxedTemplate.php(68): IPS\Theme\class_core_front_global->globalTemplate()
#5 /home/damien_prod/Internazionaleprod/public_html/system/Dispatcher/Dispatcher.php(192): IPS\Theme\SandboxedTemplate->__call()
#6 /home/damien_prod/Internazionaleprod/public_html/applications/cms/sources/Databases/Dispatcher.php(449): IPS\Dispatcher->finish()
#7 /home/damien_prod/Internazionaleprod/public_html/applications/cms/sources/Databases/Dispatcher.php(410): IPS\cms\Databases\Dispatcher->finish()
#8 /home/damien_prod/Internazionaleprod/public_html/applications/cms/widgets/Database.php(153): IPS\cms\Databases\Dispatcher->run()
#9 /home/damien_prod/Internazionaleprod/public_html/system/Widget/Widget.php(1753): IPS\cms\widgets\Database->render()
#10 /home/damien_prod/Internazionaleprod/public_html/system/Widget/Area.php(914): IPS\Widget::createWidgetFromStoredData()
#11 /home/damien_prod/Internazionaleprod/public_html/system/Widget/Area.php(883): IPS\Widget\Area->getWidgetContent()
#12 /home/damien_prod/Internazionaleprod/public_html/system/Widget/Area.php(891): IPS\Widget\Area->totalVisibleWidgets()
#13 /home/damien_prod/Internazionaleprod/public_html/static/templates/core_front_global.php(23190): IPS\Widget\Area->totalVisibleWidgets()
#14 /home/damien_prod/Internazionaleprod/public_html/system/Theme/SandboxedTemplate.php(68): IPS\Theme\class_core_front_global->widgetArea()
#15 /home/damien_prod/Internazionaleprod/public_html/system/Widget/Area.php(273): IPS\Theme\SandboxedTemplate->__call()
#16 /home/damien_prod/Internazionaleprod/public_html/applications/cms/sources/Pages/Page.php(2168): IPS\Widget\Area->__toString()
#17 /home/damien_prod/Internazionaleprod/public_html/applications/cms/sources/Pages/Page.php(2068): IPS\cms\Pages\Page->getPageContent()
#18 /home/damien_prod/Internazionaleprod/public_html/applications/cms/modules/front/pages/page.php(122): IPS\cms\Pages\Page->output()
#19 /home/damien_prod/Internazionaleprod/public_html/applications/cms/modules/front/pages/page.php(49): IPS\cms\modules\front\pages\page->view()
#20 /home/damien_prod/Internazionaleprod/public_html/system/Dispatcher/Controller.php(139): IPS\cms\modules\front\pages\page->manage()
#21 /home/damien_prod/Internazionaleprod/public_html/system/Dispatcher/Dispatcher.php(169): IPS\Dispatcher\Controller->execute()
#22 /home/damien_prod/Internazionaleprod/public_html/index.php(16): IPS\Dispatcher->run()
#23 {main}

BACKTRACE

#0 /home/damien_prod/Internazionaleprod/public_html/system/Theme/SandboxedTemplate.php(78): IPS\Log::log()
#1 /home/damien_prod/Internazionaleprod/public_html/static/templates/core_front_global.php(8253): IPS\Theme\SandboxedTemplate->__call()
#2 /home/damien_prod/Internazionaleprod/public_html/system/Theme/SandboxedTemplate.php(68): IPS\Theme\class_core_front_global->globalTemplate()
#3 /home/damien_prod/Internazionaleprod/public_html/system/Dispatcher/Dispatcher.php(192): IPS\Theme\SandboxedTemplate->__call()
#4 /home/damien_prod/Internazionaleprod/public_html/applications/cms/sources/Databases/Dispatcher.php(449): IPS\Dispatcher->finish()
#5 /home/damien_prod/Internazionaleprod/public_html/applications/cms/sources/Databases/Dispatcher.php(410): IPS\cms\Databases\Dispatcher->finish()
#6 /home/damien_prod/Internazionaleprod/public_html/applications/cms/widgets/Database.php(153): IPS\cms\Databases\Dispatcher->run()
#7 /home/damien_prod/Internazionaleprod/public_html/system/Widget/Widget.php(1753): IPS\cms\widgets\Database->render()
#8 /home/damien_prod/Internazionaleprod/public_html/system/Widget/Area.php(914): IPS\Widget::createWidgetFromStoredData()
#9 /home/damien_prod/Internazionaleprod/public_html/system/Widget/Area.php(883): IPS\Widget\Area->getWidgetContent()
#10 /home/damien_prod/Internazionaleprod/public_html/system/Widget/Area.php(891): IPS\Widget\Area->totalVisibleWidgets()
#11 /home/damien_prod/Internazionaleprod/public_html/static/templates/core_front_global.php(23190): IPS\Widget\Area->totalVisibleWidgets()
#12 /home/damien_prod/Internazionaleprod/public_html/system/Theme/SandboxedTemplate.php(68): IPS\Theme\class_core_front_global->widgetArea()
#13 /home/damien_prod/Internazionaleprod/public_html/system/Widget/Area.php(273): IPS\Theme\SandboxedTemplate->__call()
#14 /home/damien_prod/Internazionaleprod/public_html/applications/cms/sources/Pages/Page.php(2168): IPS\Widget\Area->__toString()
#15 /home/damien_prod/Internazionaleprod/public_html/applications/cms/sources/Pages/Page.php(2068): IPS\cms\Pages\Page->getPageContent()
#16 /home/damien_prod/Internazionaleprod/public_html/applications/cms/modules/front/pages/page.php(122): IPS\cms\Pages\Page->output()
#17 /home/damien_prod/Internazionaleprod/public_html/applications/cms/modules/front/pages/page.php(49): IPS\cms\modules\front\pages\page->view()
#18 /home/damien_prod/Internazionaleprod/public_html/system/Dispatcher/Controller.php(139): IPS\cms\modules\front\pages\page->manage()
#19 /home/damien_prod/Internazionaleprod/public_html/system/Dispatcher/Dispatcher.php(169): IPS\Dispatcher\Controller->execute()
#20 /home/damien_prod/Internazionaleprod/public_html/index.php(16): IPS\Dispatcher->run()
#21 {main}

Ok I find the issue.

We added tags on the menu.

But today we deleted 1 tag. And this tag was on the menu. 

Delete tags doesn't clean the menu if he was inside, causing these errors. 

Have you deleted any tags manually?

Edit: Nevermind, just reproduced it myself.

Deleting a tag doesn't delete any navbar items associated with it resulting in this.

Yes 

Quote

Ok I find the issue.

We added tags on the menu.

But today we deleted 1 tag. And this tag was on the menu. 

Delete tags doesn't clean the menu if he was inside, causing these errors.