Javascript bing地图中未触发DirectionError事件

我在用bing地图画卡车路线。但是，即使两个位置不存在任何路由，DirectionError也不会激发

 Microsoft.Maps.loadModule('Microsoft.Maps.Directions', function () {
            directionsManager = new Microsoft.Maps.Directions.DirectionsManager(map);
            directionsManager.setRequestOptions({
                routeMode: Microsoft.Maps.Directions.RouteMode.truck
            });
            //Create waypoints to route between.
            var waypointA = new Microsoft.Maps.Directions.Waypoint({ address: pickup_address });
            directionsManager.addWaypoint(waypointA);
            var waypointB = new Microsoft.Maps.Directions.Waypoint({ address: destination_address });
            directionsManager.addWaypoint(waypointB);
            //Add event handlers to directions manager.
            Microsoft.Maps.Events.addHandler(directionsManager, 'directionsError', directionsError);
            Microsoft.Maps.Events.addHandler(directionsManager, 'directionsUpdated', directionsUpdated);
            //Calculate directions.
            directionsManager.calculateDirections();
  });

function directionsUpdated(e) {
        console.log(e);
}
    //---------------- Direction Error --------------//
function directionsError(e) {
        alert('Error: ' + e.message + '\r\nResponse Code: ' + e.responseCode)
 }

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看起来这是一个最近修复的bug，因为它不再出现在Bing地图的实验分支上

在此示例中，将RouteMode更新为truck并重新运行，错误消息将显示为“无解决方案”。