Woo Gallery: Problems loading image

I am using the Woo skeleton. The thumbnails display. But if i click on any image I get the following error
Failed to load resource: the server responded with a status of 404 (Not Found). You can see the problem at bende.in

Solved it. The htaccess was missing. Used this one: https://github.com/rhukster/grav-blog/blob/master/htaccess.txt