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@sterndata We have access to the other sites hostet on the same server, like I said the problem occurs only on this one page. So it can’t be a host side problem.

@aitpro thanks for your reply, but this is a separate website (the shop page). The affected images are stored on the same page. What I noticed is images from other pages (external images) are displayed correctly when I place them in an image tag. So I must have somewhere have a misconfigured hotlink protection that blocks images from itself. But where could this misconfiguration happen? I checked all .htaccess files, and I also tried to deactivate all plugins, but had no luck with that either.

Thanks for your reply,
I doubt this is a feature from the host, because other pages are also running on this server and none of these have any problems.
Inside of “wp-content/mu-plugins” is only bps-mu-tools.php

Plugin Name: BPS MU Tools
Version: 4.0
Author: AITpro
Author URI: https://forum.ait-pro.com/forums/forum/bulletproof-security-free/

It looks like this file only handles automatic updates of the Bulletproof Security Plugin.

I also already did a recursive search “hotlink” and “hotlinking”. Hotlink2Watermark was installed after the error appeared, but is deactivated. So I can exclude that as cause of this error.
I also looked for plugins that have “wpt” within its name, but none are installed.
Only “WPBakery Page Builder”, “WP Maintenance Mode” and ”
WP Google Maps” have similar names. I don’t think any of these cause the error.
A recursive grep for “wpt” showed wp-translate and similar strings, but nothing suspicious.
I think its kind of strange “wpt-hotlinked-image-stub.png” gives 0 results on google, and even a reverse image search gives no results.

“All In One WP Security” is installed and seems to have a hotlinking function built inside its firewall function, so I disabled it and it didn’t help.

Changing the Theme didn’t change anything.
Like I said the .htaccess contains only the default entries:

# 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]
</IfModule>
# END WordPress

I just noticed the images are shown if no referrer is set inside the header. (no ref -> correct image is loaded, ref is set -> hotlink error is loaded).
The hotlink error file lies within the root directory of the webpage is named “wpt-hotlinked-image-stub.png”. I tried a recursive grep within the root directory, to find all files that access “wpt-hotlinked-image-stub.png”, but couldn’t find a single one, which seems to be very strange.

Thakns for your fast reply @sterndata
You are right about the images, the strange thing is both files are on the server and contain the same image. This also doesn’t apply to all images.
Within the Customizer the link of the second image is entered (as Logo), but as you said on the webpage itself the first image is shown.
Inside of the media files only the second image is shown, but it looks like all other images on the screenshot (The Hotlinking text).
I already checked the .htaccess and there is no blocking enabled.
The Prospect Theme is used on the page, could this cause this problem? There are also no plugins installed that are meant to block hot-linking.

@sterndata
The page is this one here: [ Link added to first post ]

(Is it possible to remove the page after the problem is solved? I would appreciate this)

• This reply was modified 6 years, 3 months ago by Jan Dembowski.