I'm debugging a Belgian WP website: slotenmakerbelgie.com. The problem is that I get a forbidden status on a specific URL: slotenmakerbelgie.com/error/ (with and without trailing slash at the end)

I really don't understand what's going on. I already have checked the following:

  • Temporary deleted .htaccess
  • Temporary deactivated all plugins
  • Checked empty folders
  • Checked and deleted wp_old_slug_redirect
  • Redirections
  • WordPress settings / files / did an integrity scan (no WP files are modified and uploaded a fresh WP install)

I'm really getting frustrated what the problem could be. My .htaccess file has just the default WP stuff:

# BEGIN WordPress
<IfModule mod_rewrite.c>
RewriteEngine On
RewriteBase /
RewriteRule ^index\.php$ - [L]
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule . /index.php [L]
# END WordPress

And to clarify

This shouldn't be happening. It's not default behavior. I'm maintaining similar websites. These websites all have a custom 404 page with a WP plugin called 404page

There is no error folder! The rest of the website works, it's only this specific URL. I already did this: https://www.wpbeginner.com/wp-tutorials/how-to-fix-the-403-forbidden-error-in-wordpress/

I have also deactivated and deleted the SuperPWA plugin. It's still a problem, therefore I can conclude this has nothing to do with a service worker, because currently there is none.

  • "with and without trailing slash at the end" - It would seem there is a 301 redirect to append the slash. The network traffic states that the 301 redirect and 403 response are both "from ServiceWorker".
    – MrWhite
    Mar 21, 2019 at 12:03
  • @MrWhite This is what I first thought, just now I have deleted the SuperPWA plugin: wordpress.org/plugins/super-progressive-web-apps It's still a problem. It gives me headaches. Mar 22, 2019 at 8:28

1 Answer 1


I have checked and found that you are getting forbidden error only on this page slotenmakerbelgie.com/error. So maybe you are getting this error because there is folder name error (maybe hidden) and there is no permission to access that folder publicly.

  • Hi @Manntrix I checked all folders on my server. We are on a shared server / hosting. Mar 26, 2019 at 12:03

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