Warning: Online Website on WordPress
If you encounter an error message about a JSON error when trying to save or update content in WordPress, it means that something is disrupting the communication between the browser and the server. The causes can be diverse, but this guide will show you how to resolve this problem step by step.
1. What is a JSON Error in WordPress?
A JSON error typically indicates a problem with the REST API, which WordPress uses for communication. Without a properly functioning REST API, WordPress cannot process certain requests, such as saving content or publishing posts.
2. Most Common Causes and Solutions
2.1. Incorrect URL Address of the Website
– Go to Settings > General in the WordPress panel.
– Check if the fields “WordPress address (URL)” and “Site address (URL)” are correct (e.g., https://yourdomain.pl).
– If using HTTPS, ensure that the SSL certificate is properly configured.
2.2. Conflicting Plugins
– Disable all plugins:
– Go to Installed Plugins in the WordPress panel.
– Select all plugins and choose Deactivate.
– Check if the error still occurs.
– Activate each plugin individually to identify which one causes the problem.
2.3. Theme Causing Issues
– Go to Appearance > Themes.
– Change the theme to a default one (e.g., Twenty Twenty-Two).
– Check if the issue is resolved.
2.4. Errors in the .htaccess File
– Connect to your server via FTP or file manager in your hosting panel.
– Find the .htaccess file in the WordPress root directory.
– Rename it (e.g., .htaccess_backup).
– Log into WordPress and go to Settings > Permalinks, then click Save Changes to generate a new .htaccess file.
2.5. Server Problem
– Check PHP limits:
– memory_limit – recommended minimum: 128M.
– max_execution_time – increase to 300.
– post_max_size – set higher than the maximum file size.
– Contact your hosting support if the issue persists.
2.6. CORS Error
A JSON error can be related to CORS (Cross-Origin Resource Sharing) policy. To fix this:
– Open the .htaccess file.
– Add the following code:
“`
Header set Access-Control-Allow-Origin “*”
“`
– Save changes and check if the error is gone.
3. Diagnostics Using Tools
3.1. Browser Console
– Open browser developer tools (F12).
– Go to the Console tab.
– Check for errors related to REST API or CORS.
3.2. Server Logs
– Log in to your hosting panel.
– Open server error logs and check if there are entries related to the JSON error.
4. Contact Technical Support
If none of the above steps resolve the issue, contact your hosting support or a developer. Ensure you have information about the WordPress version, theme, and active plugins.
By following these steps, you should be able to resolve the JSON error in WordPress and restore full functionality to your website. If you still encounter issues, please use our contact form below.
