Hello, To properly investigate and resolve the issue, It need some additional information, such as whether this error is occurring on a specific page only, or across the entire website? Thanks
the website is just one page so I’m not sure how to answer that
To fix the fatal error on your WordPress site (when the page won’t load):
You will need access to your hosting control panel (like cPanel, Plesk, or whatever dashboard your hosting company gives you).
- Temporarily disable all plugins (this is the safest first step):
- Log in to your hosting control panel.
- Open the File Manager tool.
- Go to your WordPress folder (usually something like /public_html/ or /www/ look for folders like wp-admin, wp-content, and wp-includes).
- Inside the main WordPress folder, find the wp-content folder.
- Look for the folder named plugins and rename it to something like plugins-old or plugins-disabled.
- Save the change, then refresh your website in the browser.
- If the error disappears and the site loads (even if it looks plain), great! This means one of your plugins was causing the problem.
- Find the bad plugin:
- Log in to your WordPress admin dashboard (yoursite.com/wp-admin) it should work now.
- Go to Plugins , Installed Plugins.
- Rename the plugins-old folder back to plugins (via File Manager again) this reactivates them all at once, but don’t worry.
- Now, deactivate all plugins from the dashboard.
- Reactivate them one by one (activate , refresh site , check if error returns).
- When the error comes back after activating a specific plugin, that’s the culprit. Keep it deactivated for now, or look for an update/fix for it.
- If renaming plugins didn’t fix it, try switching to a default theme:
- Back in File Manager, go to wp-content/themes/.
- Find the folder for your current theme (it might be named after your theme, like astra, generatepress, etc.).
- Rename it to something like your-theme-old.
- Refresh your website, WordPress will automatically switch to a default theme (like Twenty Twenty-Five or similar).
- If the error goes away, the problem was with your theme. You can rename the old theme folder back later and contact the theme developer, or switch to a default one permanently.
- If nothing above works (still error):
- Go back to File Manager.
- Navigate to: wp-includes/block-supports/layout.php
- Open that file for editing (most hosts have an “Edit” button).
- Find the line around 600 that has array_intersect_key( (it might look like $merged_layout = array_intersect_key( $something, $defaults );).
- Add a quick safety line right before it, like:text
$something = (array) $something; // Force it to be an array(Replace $something with the actual variable name there, often $parent_layout or $layout.)
- Save the file and refresh your site. This is a temporary patch to get things working again (WordPress might overwrite it on update, so fix the real cause later).
- Or contact your hosting support, show them the exact error message; many hosts can help edit files or disable things quickly.
After the site is back up:
- Update WordPress, all plugins, and your theme right away.
- Clear your browser cache (Ctrl + F5 or Cmd + R).
- If you use caching (like WP Rocket, Cloudflare), clear that too.
This should get your site loading again safely. If you run into trouble at any step (like can’t find a folder), tell me what you see in your control panel or the exact error now, and I can guide you more.
