How to Fix “Updating Failed” in Gutenberg

I already have a couple tips on my blog about “fixing Gutenberg”, for example I already mentioned that you have to double check that REST API is not disabled and in this guide I show what to do if Inserter Dialog is not available. But recently I faced with another issue.


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

I love WordPress, WooCommerce and Gutenberg so much. 11 yrs of experience.

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