He buscado en google ystackoverflow, pero no pude encontrar unsolution para este problema Estoy cargando elmap así en miview.

<img
      ng-src='https://dev.virtualearth.net/REST/v1/Imagery/Map/Road/
              {{Latitude.__text}},{{Longitude.__text}}/12?mapSize=77,120&amp;
                           key={{Key}}'></img>

A continuación se muestra cómo se carga en index.html

<script type='text/javascript' src='https://www.bing.com/mapspreview/sdkrelease/mapcontrol?callback=loadMapScenario' async defer></script>
<script type='text/javascript' src='app/services/bing.js?' async defer></script>

Abajo está micontroller código, donde estoy tratando de llamar almaps.

function GetMap() {
    if (typeof Microsoft !== undefined && typeof Microsoft.Maps !== undefined &&
        Microsoft.Maps.Map !== null) {
        //Map API available add your map load code.
        angular.element(document).ready(function() {
            map = new Microsoft.Maps.Map(document.getElementById('myMapL'), {
                credentials: Key,
                mapTypeId: "r",
                zoom: 4
            });
        });
    } else {
        setTimeout(GetMap(), 100);
    }
}

Recibo el siguiente error:

TypeError: Cannot read property 'prototype' of null
    at k (bing.js:11)
    at h (bing.js:11)
    at e (bing.js:11)
    at t.l [as instance] (bing.js:11)
    at h (bing.js:11)
    at e (bing.js:11)
    at t.l [as instance] (bing.js:11)
    at new Microsoft.Maps.Map (bing.js:13)
    at HTMLDocument.<anonymous> (file-location.js:121)
    at j (jquery-1.11.0.min.js:2)