How to Fix “Updating Failed” in Gutenberg

It should be fully clear what the issue is if you look on the screenshot below:

How to fix Updating failed in Gutenberg
You can neither create a new post nor edit an existing one.

On this screenshot you can also see that I am using custom background and custom fonts. If you’re interested in how to do that, check this tutorial.

Coming back to our issue, it happened just after I moved my website to localhost.

Here is a couple error messages you can find in the browser console:

Errors in browser console when Gutenberg fails to update a post

I think many of you already know how to fix this issue 😁 Have some ideas?

If not, my next question is – do you use permalinks (pretty URLs) on your website? 🤔

Yes, yes, all you have to do is to go to Settings > Permalinks from WordPress admin menu and hit the button “Save changes” without changing anything. That’s all!

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Misha Rudrastyh

Misha Rudrastyh

Hey guys and welcome to my website. For more than 10 years I've been doing my best to share with you some superb WordPress guides and tips for free.

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