HERE 地图未加载 (Javascript 3.1)

HERE Map is not loading (Javascript 3.1)

地图初始化期间出现错误无法读取未定义 的属性 'version'。昨天它就像一个魅力。有什么解决办法吗?我正在使用新的 Javascript API 3.1

 this.platform = new this.H.service.Platform({
     apikey: environment.hereMapApiKey_31,
     useHTTPS: true
 });
  <link rel="stylesheet" type="text/css" href="https://js.api.here.com/v3/3.1/mapsjs-ui.css" />
  <script src="https://js.api.here.com/v3/3.1/mapsjs-core.js"></script>
  <script src="https://js.api.here.com/v3/3.1/mapsjs-service.js"></script>
  <script src="https://js.api.here.com/v3/3.1/mapsjs-ui.js"></script>
  <script src="https://js.api.here.com/v3/3.1/mapsjs-mapevents.js"></script>
ERROR Error: Uncaught (in promise): TypeError: Cannot read property 'version' of undefined
TypeError: Cannot read property 'version' of undefined
    at X.Ik (eval at <anonymous> (mapsjs-core.js:71), <anonymous>:44:738)
    at new X (eval at <anonymous> (mapsjs-core.js:71), <anonymous>:44:474)
    at HereMapService.initializeMap (hereMap.service.ts:23)
    at hereMap.component.ts:66
    at ZoneDelegate.invoke (zone-evergreen.js:365)
    at Object.onInvoke (core.js:39699)
    at ZoneDelegate.invoke (zone-evergreen.js:364)
    at Zone.run (zone-evergreen.js:124)
    at zone-evergreen.js:851
    at ZoneDelegate.invokeTask (zone-evergreen.js:400)
    at resolvePromise (zone-evergreen.js:793)
    at resolvePromise (zone-evergreen.js:752)
    at zone-evergreen.js:854
    at ZoneDelegate.invokeTask (zone-evergreen.js:400)
    at Object.onInvokeTask (core.js:39680)
    at ZoneDelegate.invokeTask (zone-evergreen.js:399)
    at Zone.runTask (zone-evergreen.js:168)
    at drainMicroTaskQueue (zone-evergreen.js:570)

这似乎是一个暂时的问题,几个小时后它就消失了。我可以关闭问题了。