Thread:Project:Support desk/My Wiki's logo is the Wikipedia Logo... And I have NO IDEA WHY

Here's my wiki: http://mafia-town.net/wiki/index.php?title=Main_Page

In the top left is a logo. It should be this image: http://mafia-town.net/wiki/mafia-town-wiki-logo.png

For some users, the correct image appears. For others, including myself, the Wikipedia logo appears. This is odd, as the default logo is the MediaWiki logo, and the Wikipedia logo is no where on my server, nor has it ever been.

In fact, when I view the site on my laptop, I see the Wikipedia logo. On my desktop, I get the correct logo.

When I inspect the image in Firefox, the image file name is the correct file (mafia-town-wiki-logo.png), even though Wikipedia's logo is showing up.

The image file I want to appear is uploaded to the root directory of my Wiki. It is in the same directory as my LocalSettings.php file. In that file, I have this line:

I have hard refreshed my browser. I have tried even changing the image in my LocalSettings.php file to another image, and it is still the Wikipedia logo (which, again, is no where to be found on my server). This issue arises for many users on many different devices and has been like this for months.

And I have no idea why.