Unable to Communicate Back With Site to Check For Fatal Error – This Fattal error comes due to WordPress features in WordPress version 4.9. Mainly it checks for PHP errors when any file is uploading in the WordPress file editor to prevent saving code that breaks your website.
It may be any plugin or server settings that prevent the wp from looking back and checking for any error breaking your updates, and WordPress can’t check if your code will produce any error or not, preventing the code updates.
Unable to Communicate Back With the Site to Check For Fatal Error
Warning: Don’t Modify Core WordPress Files
Unable to Communicate Back With Site to Check For Fatal Error – This Error message indicates an issue with communicating with the website to check for a fatal error. Several reasons, such as a network connection problem, server-side issue, or a problem with the website code itself, could cause this issue. To resolve this issue, you can try the following steps:
- Check your network connection and make sure you are connected to the internet.
- Try accessing the website from another device or network to see if the problem persists.
- Contact the website support or the developer for further assistance in resolving the issue.
How to Solve Fatal Error – Watch Our Full Video
This error message shows when you are trying to edit the theme code in WordPress and some PHP issue occurs then a fatal error message shows like the below image. Here is the solution to this error.
This fatal error comes from a WordPress feature included in WordPress 4.9. It checks for PHP errors upon file uploading in the WP file editor to prevent saving code that could/will break your site.
It’s mostly a plugin (or a server configuration) that prevents the WordPress loopback check from properly checking for potential errors caused by your update. As WordPress cannot check whether your new code will produce errors, it prevents the code update.

You can also try the following the step
- Disable one by one all plugin
- Clear all cache of your website.
- Use SFTP to Manage your WordPress Files and Folders
- Use Your Web Host File Editor Instead
if the problem is still as it is please follow the below step
Here we provide a solution for this problem, you have to follow these steps to remove this problem
1. Goto WordPress plugin and click on add new plugins
2. Search wp editor plugin by Benjamin Rojas
3. Install the plugin
4. After 15 minutes remove the plugin
5. Try again to edit your theme error is solved now
Unable to communicate back with the site to check for fatal error, so the PHP change was reverted. You will need to upload your PHP file change by some other means, such as by using SFTP
Unable to Communicate Back With the Site to Check For Fatal Error
Some Other Ways to Solve this problem
Use Your Web Host File Editor Instead
Use Sftp to Manage Your WordPress Files and Folders
Common Causes
There are many plugins producing this problem
- Magic Fields
- ShortPixel Optimizer
- WP Spamshield
- Social Login WordPress Plugin
- GeoDirectory
- Ninja Popups for WordPress
- Custom firewalls or security rules
- Some custom themes
- WP Server Stats
FAQ Related to PHP Fatal Error
The question is why does fatal error is occurring?
This error occurs when you try to edit your theme so many times or try to add code in the header or footer. The main reason for this error is unwanted plugins or code in your theme.
How Do I Fix a Fatal Error on My Website?
Disable all Plugin & Clear Cache Install wp Editor Plugin for PHP editing
Unable to Communicate Back With the Site to Check For Fatal Error Solution
Search and install the wp editor plugin by Benjamin Rojas And after some time remove it.
How to Fix Product Activation Failed Microsoft Word