404 Page not found

I have the Free version installation. 

Every thing seems to work, but when I use the following menus set at special access on the fron page for selected users I get the following error on this menuse:

1. Moderate Images
2. User Approval
3. Submit an article
4. Select an Article

404 Page not found

Call Stack#FunctionLocation
1 ()    JROOT/libraries/src/Router/Router.php:166
2  Joomla\CMS\Router\Router->parse()      JROOT/libraries/src/Application/SiteApplication.php:767
3  Joomla\CMS\Application\SiteApplication->route()  JROOT/libraries/src/Application/SiteApplication.php:243
4  Joomla\CMS\Application\SiteApplication->doExecute()   JROOT/libraries/src/Application/CMSApplication.php:304
5  Joomla\CMS\Application\CMSApplication->execute()      JROOT/includes/app.php:58
6  require_once()   JROOT/index.php:51
Please advise.