Can't publish, edit or delete posts since Gutenberg update

1. Why won't my WordPress post publish?
2. How do I fix WordPress 5 Publishing failed or update failed?
3. How do I switch from Gutenberg to classic editor?
4. Can you edit a WordPress post after publishing?
5. How do you solve updating failed the response is not a valid JSON response?
6. How do I upgrade to latest version of WordPress?
7. How do I fix failed updates?
8. What is the response is not a valid JSON response?
9. What is the difference between Gutenberg and classic editor?
10. Should I switch to Gutenberg?
11. How do I enable Gutenberg editor?

Why won't my WordPress post publish?

A common cause of the “Publishing Failed” error in WordPress (since the Block Editor was launched) is that the REST API is being blocked or disabled. If you're seeing this message, a wise place to start troubleshooting is by testing the REST API to make sure it's working.

How do I fix WordPress 5 Publishing failed or update failed?

How to Fix WordPress Updating Failed / Publishing Failed Error

1. What Causes Updating Failed or Publishing Failed Error in WordPress? ...
2. Check Your Internet Connection and Site URL. ...
3. Check REST API Status Using WordPress Site Health. ...
4. Disable All Your WordPress Plugins. ...
5. Check Website Firewall Service. ...
6. Enable and Review WordPress Debug Log. ...
7. Temporarily Switch to the Classic WordPress Editor.

How do I switch from Gutenberg to classic editor?

Use Both Editors at First – Under Settings>Writing, there is the option to 'allow users to switch editors”. Assuming you have both editors installed, you can turn this option on and ease yourself into the Gutenberg experience by using it alongside the classic editor.

Can you edit a WordPress post after publishing?

WordPress makes it super easy to create and edit posts. You can edit all posts whenever you want, even after publishing them. However, when editing live posts, you cannot save them until you are done editing. ... You can edit the draft and then paste it to the original post.

How do you solve updating failed the response is not a valid JSON response?

The most common solution for publishing or updating failed the response is not a valid JSON response error is to update your permalink structure. From your WordPress dashboard, go to Settings and then Permalinks. Then you can click on the Save Changes button to re-save or update the current permalink structure.

How do I upgrade to latest version of WordPress?

First, log in to the admin area of your WordPress website and go to Dashboard » Updates page. You will see the notice that a new version of WordPress is available. Now you just need to click on the 'Update Now' button to initiate the update.

How do I fix failed updates?

1. For VM users: Replace with a newer VM. ...
2. Restart and try running Windows Update again. ...
3. Try Windows Update Troubleshooter. ...
4. Pause updates. ...
5. Delete the SoftwareDistribution directory. ...
6. Download the latest feature update from Microsoft. ...
7. Download the cumulative quality/security updates. ...
8. Run the Windows System File Checker.

What is the response is not a valid JSON response?

Alternative solutions to the response is not a valid JSON response error. Deactivate all the plugins on your site and edit the content normally. If you're using the Really Simple SSL plugin then deactivate this plugin first. Subsequently, try saving the document.

What is the difference between Gutenberg and classic editor?

The entire publishing and editing experience has been reshaped by Gutenberg. Blocks are the new tools to convert your ideas into media-rich content.
...
Gutenberg Vs Classic Editor Comparison.

Should I switch to Gutenberg?

If you are not updating your post in any other way, it's probably not worth your time to convert to blocks. However, if you need to update photos, improve SEO or convert recipe cards, this is the perfect time to convert the post to Gutenberg blocks.

How do I enable Gutenberg editor?

First, you need to install and activate the plugin. You can download the installation files from its WordPress.org Plugin page. Next, go to Settings and then click Gutenberg Manager on the Left Menu. From the settings tab, we have the Global Option, Standard Post Types, and Custom Post Types.