On my quick.cms website I use a (php) contactform. If you fill in the form incorrectly you will get an errorpage.
This errorpage has to be hidden. But, unfortunately I cannot add hidden pages. So I have added a page at the menu Products (left column) and I'm using that page as an errorpage. Because this page has to be hidden, I have deleted the menu Products in Container.php, which is now invisible.
But if I use the mobile version, the errorpage is not being displayed on the left side of the screen (like all other pages). How can I change this?