How do I solve the fatal error for wordpress?

1. Download a new WordPress installation zip:

   https://wordpress.org/download/

2. Remove the folders wp-admin & wp-includes from your server:

3. Reupload those folders from the fresh downloaded WordPress zip:

   Note: this does not delete your site content, the content of your website is in the database and in the wp-content folder.

Update your PHP version and use a stable WordPress version:

To resolve the fatal error caused by an incompatible PHP version or an outdated WordPress version, you should:

1. Check your current PHP version and WordPress version.
2. Ensure that your PHP version meets the requirements of your WordPress version. WordPress 5.3 and later require PHP 7.4 or higher.
3. If necessary, update your PHP version to the latest stable release.
4. Update your WordPress installation to the latest stable version.

Disable WordPress Auto Update:

If you experience fatal errors after updating WordPress, you can disable automatic updates to prevent further issues.

1. Open your wp-config.php file.
2. Add the following code:

   define( 'WP_AUTO_UPDATE_CORE', false );
   
   

3. Save the changes to your wp-config.php file.