Most probably the server is setting the wrong Content-Type header for SVG files.

The file is transferred with Content-Type: text/xml while the correct one is Content-Type: image/svg+xml. Browsers refuse to render SVG files which do not have a correct Content-Type header and do not perform any auto detection. You can ask the hosting company to set up the correct Content-Type header for svg images, or you can follow this tutorial which explains how to configure Apache: