ech.-4.2.js:27051没有支持给定查找器找到的convertFromPixel的坐标系。echarts 地图配置项内容和展示

引用的版本为4.2的echart，但是提示ech.-4.2.js:27051没有支持给定查找器找到的convertFromPixel的坐标系。

      var uploadedDataURL = "/asset/get/s/data-1543635700446-L00juWuTN.JSON";

$.get('/asset/get/s/data-1543635700446-L00juWuTN.JSON', function (usaJson) {
    myChart.hideLoading();
    echarts.registerMap('USA', usaJson, {
    });
    option = {
        series: [
            {
                name: 'USA PopEstimates',
                type: 'map',
                roam: true,
                map: 'USA',
                itemStyle:{
                    //未选中
                    normal:{                           
                        areaColor:'rgb(17,98,154)',        
                        borderColor:'rgb(60,180,207)',    
                        borderWidth:1,                     
                        opacity:0.8,                       
                    }, 
                    //选中
                    emphasis:{
                        // areaColor:'rgb(17,98,154)',        
                        label:{
                            show:true
                        }
                    }
                },
                // 文本位置修正
                textFixed: {
                    Alaska: [20, -20]
                },
                data:[
                    {name: 'Alabama', value: 4822023},
                    {name: 'Alaska', value: 731449,a:0},
                    {name: 'Arizona', value: 6553255},
                    {name: 'Arkansas', value: 2949131},
                    {name: 'California', value: 38041430},
                    {name: 'Colorado', value: 5187582}, 
                    {name: 'Connecticut', value: 3590347},
                    {name: 'Delaware', value: 917092},
                    {name: 'District of Columbia', value: 632323},
                    {name: 'Florida', value: 19317568},
                    {name: 'Georgia', value: 9919945},
                    {name: 'Hawaii', value: 1392313},
                    {name: 'Idaho', value: 1595728},
                    {name: 'Illinois', value: 12875255},
                    {name: 'Indiana', value: 6537334},
                    {name: 'Iowa', value: 3074186},
                    {name: 'Kansas', value: 2885905},
                    {name: 'Kentucky', value: 4380415},
                    {name: 'Louisiana', value: 4601893},
                    {name: 'Maine', value: 1329192},
                    {name: 'Maryland', value: 5884563},
                    {name: 'Massachusetts', value: 6646144},
                    {name: 'Michigan', value: 9883360},
                    {name: 'Minnesota', value: 5379139},
                    {name: 'Mississippi', value: 2984926},
                    {name: 'Missouri', value: 6021988},
                    {name: 'Montana', value: 1005141},
                    {name: 'Nebraska', value: 1855525},
                    {name: 'Nevada', value: 2758931},
                    {name: 'New Hampshire', value: 1320718},
                    {name: 'New Jersey', value: 8864590},
                    {name: 'New Mexico', value: 2085538},
                    {name: 'New York', value: 19570261},
                    {name: 'North Carolina', value: 9752073},
                    {name: 'North Dakota', value: 699628},
                    {name: 'Ohio', value: 11544225},
                    {name: 'Oklahoma', value: 3814820},
                    {name: 'Oregon', value: 3899353},
                    {name: 'Pennsylvania', value: 12763536},
                    {name: 'Rhode Island', value: 1050292},
                    {name: 'South Carolina', value: 4723723},
                    {name: 'South Dakota', value: 833354},
                    {name: 'Tennessee', value: 6456243},
                    {name: 'Texas', value: 26059203},
                    {name: 'Utah', value: 2855287},
                    {name: 'Vermont', value: 626011},
                    {name: 'Virginia', value: 8185867},
                    {name: 'Washington', value: 6897012},
                    {name: 'West Virginia', value: 1855413},
                    {name: 'Wisconsin', value: 5726398},
                    {name: 'Wyoming', value: 576412},
                    {name: 'Puerto Rico', value: 3667084}
                ]
            }
        ]
    };
    myChart.setOption(option);
    myChart.on("click",function(params){
        console.log(params);
        console.log(params.event.event.y);
        console.log(params.event.event.x);
        let y = params.event.event.y;
        let x = params.event.event.x;
        let result = myChart.convertFromPixel({seriesId:'02'},[y,x]);
        console.log(result);
        let result2 = myChart.convertToPixel({seriesId: '02'}, [-132.483808, 54.898904]);
        console.log(result2);
    });
});