Map displays as an empty box

When adding your plugin to my website, fire bug display the following 2 javascript errors, each:”google is not defined”; I already saw the message from gbolin – so I updated the theme “twentythirteen” and child-theme and verified the javascript I am using in the child theme, but still no map on my page. Any help would be appreciated, thanks a lot in advance.

https://ww.wp.xz.cn/plugins/google-maps-builder/