logo will not upload in multisite

Greetings,

I am doing a mock setup to show a client how their site could look with some changes and a new theme, but I am unable to upload the logo while customizing the site using customizr. Everything else seems to be running correctly.

When I apply the changes on the client’s site (not a multisite) the logo appears just fine. Has anyone had or know of problems with the logo upload and multisites?

Thanks