Error when using as an embed in a local .html document #13

Hi everyone,

I've been trying to make an app store for windows 8 and 8.1 and I came up with the idea of a .html document that I can easily edit without a user updating the software every time a new app gets added. But whenever I start to debug the project, I get an error.

I'm not sure if this is a problem with my own code or a problem with the website. But if anybody knows what I'm doing wrong then please send me a message.

Thanks!