Bing Maps Api V8

I'm moving stuff from the v7 to the v8 Bing Maps API. I'm using the async load and a callback to trigger the map. However, in my 'site' page I'm getting the following error (in a

Solution 1:

Try adding the map script after the rest of your code. When using async defer when loading the map script, it will first the callback as soon as the map code is available which, if cached, would be before anything else in the page below it.