Upload design not working

Hello

I have started recently with Inkscape doing my own keycap set. I wanted to see how it was going (there is literally nothing done but a few keys moved). The file is 630K in size i try to load it up but it's not working at all. No warnings from the site also.

I did select everything in inkspace and convert object to path as the guide say. Anything i might be missing?. 

Thanks in advance.