If you've added CloudFlare to your site, you may find that Ghost Admin doesn't load after updates.

Errors

Open developer tools to check for errors in the JavaScript code:

TypeError: n.item is not a function or Uncaught SyntaxError: Unexpected string

To fix

It is recommended that you add a page rule which turns off some RocketLoader, mirage2 and autominify for the path /ghost*, so these features don't affect the Ghost admin panel.

This solution is for developers who are maintaining a self-hosted instance of Ghost. If you're on Ghost(Pro) both nginx and CloudFlare are configured as standard and you don't need to do anything.