内容：软 404 页面

Pages that respond with a '200' status code suggesting they are 'OK', but appear to be an error page - often referred to as a '404' or 'page not found'. These typically should respond with a 404 status code if the page is no longer available. These pages are identified by looking for common error text used on pages, such as 'Page Not Found', or '404 Page Can't Be Found'. The text used to identify these pages can be configured under 'Config > Spider > Preferences'.

How to fix: Soft 404 pages should be reviewed and if true error pages should be configured to return a '404' status code. All links on a website should ideally resolve to working pages for users. Links to error pages should be updated to their correct locations, removed and redirected where appropriate.