[Observium] Is there a trick to getting custom logos working?

Hello,

I'm trying to get a custom logo working on my install with a png file. The file has the following properties:

[image: Inline image 1]

Is located in the /html/images directory:

[image: Inline image 2]

And has been configured using the following config line:

$config['web']['logo'] = "logo-dk.png";

but for some reason, the logo is not updating in the web gui. Is there anything that I can try to get this working properly?