You need to enable SVG images on your server:

Apache:
Add this to .htaccess file (create one if missing) in the album's root folder:

AddType image/svg+xml svg svgz 
AddEncoding gzip svgz

... or add the same code to the server's httpd.conf file.

IIS/Azure:
http://httpjunkie.com/2014/884/svg-no-iis/