10/09/2018

How To Fix the “this.activateMode is not a function” Error in Gutenberg

Imagine you are busy developing a Gutenberg block. You reload the page, and suddenly the editor will break, displaying an The editor has encountered an unexpected error. message. You look into the JavaScript console of your browser, and see a this.activateMode is not a function error.

In this article we’ll look at why this error occurs, and how you can fix it.

Read More