Logo not showing on all pages

Here’s a link to my site: https://mitomeru.net/

For some reason I suddenly noticed that I can see the logo on the main page there but not if I click any of my posts – the logo seems to go away. I can still click in the general area of where my logo would be and it leads back to the home page but the actual picture is not there.

Any clue as to why this may be? I’m having trouble figuring out why as I just started to notice this.