Update problem

Last update something is not quite right. When I try and save an article it throws this error.

"0 Call to undefined method Joomla\CMS\Application\AdministratorApplication::getLanguageFilter()"

I had to disable the plugin 'pingomatic' by JSitemaps and then it works.

However did total system debug and turned on and off all components and when I disable Route 66 the problem resolves.
Can you see what the problem is?


Debug report below

1 () JROOT/plugins/system/route66/lib/router.php:256
2 Route66SefRouter->preParseExtension() JROOT/libraries/src/Router/Router.php:400
3 Joomla\CMS\Router\Router->processParseRules() JROOT/libraries/src/Router/Router.php:141
4 Joomla\CMS\Router\Router->parse() JROOT/plugins/content/pingomatic/pingomatic.php:207
5 PlgContentPingomatic->findItemidNewRouter() JROOT/plugins/content/pingomatic/pingomatic.php:290
6 PlgContentPingomatic->routeArticleToSefMenu() JROOT/plugins/content/pingomatic/pingomatic.php:441
7 PlgContentPingomatic->pingContent() JROOT/libraries/vendor/joomla/event/src/Dispatcher.php:486
8 Joomla\Event\Dispatcher->dispatch() JROOT/libraries/src/Application/EventAware.php:111
9 Joomla\CMS\Application\WebApplication->triggerEvent() JROOT/libraries/src/MVC/Model/AdminModel.php:1410
10 Joomla\CMS\MVC\Model\AdminModel->save() JROOT/administrator/components/com_content/src/Model/ArticleModel.php:853
11 Joomla\Component\Content\Administrator\Model\ArticleModel->save() JROOT/libraries/src/MVC/Controller/FormController.php:708
12 Joomla\CMS\MVC\Controller\FormController->save() JROOT/libraries/src/MVC/Controller/BaseController.php:735
13 Joomla\CMS\MVC\Controller\BaseController->execute() JROOT/libraries/src/Dispatcher/ComponentDispatcher.php:146
14 Joomla\CMS\Dispatcher\ComponentDispatcher->dispatch() JROOT/libraries/src/Component/ComponentHelper.php:389
15 Joomla\CMS\Component\ComponentHelper::renderComponent() JROOT/libraries/src/Application/AdministratorApplication.php:143
16 Joomla\CMS\Application\AdministratorApplication->dispatch() JROOT/libraries/src/Application/AdministratorApplication.php:186
17 Joomla\CMS\Application\AdministratorApplication->doExecute() JROOT/libraries/src/Application/CMSApplication.php:278
18 Joomla\CMS\Application\CMSApplication->execute() JROOT/administrator/includes/app.php:63
19 require_once() JROOT/administrator/index.php:32

 

I see now that also the error occurs when listing JSitemaps links. when I want to create a list to analyze sitemap links it happens too. I have pingomatic now disabled.

An error has occurred.
0 Call to undefined method Joomla\CMS\Application\AdministratorApplication::getLanguageFilter()