使用leaflet加载wmts服务，出现问题

Question

chrome控制台报错 Cannot read property 'identifier' of undefined

引入的是leaflet加载wmts服务的插件 leaflet-tilelayer-wmts.js

核心js代码

  var url = "http://192.168.118.290:8091/seis/v3/wmts/service/1038/2?token=594b9425167835919531636677f86709";

                var ign = new L.TileLayer.WMTS( url ,
                                            {
                                                layer: "pogaksbsr",
                                                style: "normal",
                                                format: "image/jpeg",
                                            }
                                            );
                var map = L.map('map').setView([48.505, 3.09], 13);

                L.control.scale({'position':'bottomleft','metric':true,'imperial':false}).addTo(map);

                map.addLayer(ign);

                var baseLayers = {"Carte IGN" : ign};

                L.control.layers(baseLayers, {}).addTo(map);