404 Error Page

A 404 page is used to tell search engines that links/pages, random or old, do not exist. this reduces the amount of duplicate and incorrect urls.
 

Setup

1) Create a new page under Content > Pages

The name and file name of this page is up to you. You can add Text/HTML content to this page to instruct users to go somehwere else on your site. e.g. Can't find what you're looking? Click Here...

2) Navigate to Settings > SEO > URL's (tab)

3) Locate the setting titled Page to show when page is not found and select the newly created page from the drop down. Save Changes.