How to Fix the Invalid JSON Error in WordPress?

In this video, we’ll walk you through the various methods to get rid of this WordPress error on your website.

Timestamps
0:00 - Introduction
0:24 - What triggers the error?
0:56 - Check the URL settings
1:36 - Fix WordPress Permalink structure
2:15 - Regenerate .htaccess file
3:15 - Check themes and plugins
4:30 - Use Classic Editor
5:18 - Check Site Health Tool
5:35 - Disable Security Firewall
6:15 - Use Debugging in WordPress
7:13 - Upload files to the Media library

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[SameerAbbasMughal]

This is the best video for all kind of errors related with JSON in wordpress

[idefix]

Hi! Today i suddenly had this error! I am using Oxygen Builder. Everything works fine with the normal editor until i post a link in my blog editor and want to publish it. Now after a couple of tries I used classic editor and now it works. But the Layout and the editor su**. Where can the error be now if I only had to switch to the classic editor?