Logo image not updating

Hello,

I’ve tried a few times to update my logo through the “Customize” panel under “Appearance,” but it’s not changing. Obviously I was able to do this before since my current logo is an image, but all of a sudden it’s not working.

I tried deactivating most of my plugins (there is a gallery one that I still need), but that hasn’t helped.

Here’s my site:
http://www.alexandraschmidt.com

Any help appreciated! Thanks!