The Updating Failed WordPress bug can be annoying, it can pop-up out of nowhere, and if you do not know how to fix this, it can be a real dealbreaker to continue with Gutenberg.
In this post, we have listed down 4 methods that you can use to fix the updating failed bug which occurs when you try to publish or save a draft.
The errors you have should contain “/wp-json/wp/v2/posts“. You can verify this by using the Inspect button of your favorite browser and capture the traffic.
The methods are:
This one is easy and straight forward. Open your browser, and clear your cookies.