_config modifies url and then saves it. there are always errors

  node.js, question
## If your site is put in a subdirectory, set url as 'http://yoursite.com/child' and root as '/child/'
 url: http://
 root: /
 permalink: :year/:month/:day/:title/
 permalink_defaults:

This is the default under the _config.yml file, the error of saving the times url
图片描述

Thank you!

Has been solved, is the problem of Uniform Resource Locator