无法读取未定义的属性“ groupHeaderColumnTemplate”

Question

我有一个4列的剑道网格。 当我将日期列分组时，浏览器会运行以下错误：“无法读取未定义的属性'groupHeaderColumnTemplate'”，并且网格被阻止

我尝试在网格的数据源中的架构上定义数据列，但这不起作用。

var dataSource = new kendo.data.DataSource({
                    transport: {
                        read: {
                            url: Utils.getUrlServices() + "getGrid",
                            dataType: "json",
                        }
                    },
                    requestEnd: function (e) {
                    },
                    schema: {
                        model: {
                            fields: {
                                id: {type: "number"},
                                name: { type: "string" },
                                    namecompany: { type: "string" },
                                hours: {type: "number"},
                                date: {type: "date"}
                            }
                        }
                    },
                    pageSize: 500,
                    group: [
                         {
                             field: 'name',
                             aggregates: [
                                          {field: "hours", aggregate: "sum" }
                                      ]
                         }, {
                             field: 'nomeImpresa',
                             aggregates: [
                                          {field: "hours", aggregate: "sum" }
                                      ]
                         },
                         { field: "hours",
                             aggregates: [
                                  {field: "hours", aggregate: "sum" },
                                  {field: "name", aggregate: "sum"},
                                  {field: "nameCompany", aggregate: "sum"},
                                  {field: 'date', aggregate: 'sum'}
                              ]
                         },
                         {field: 'date',
                             aggregates: [
                                          {field: "hours", aggregate: "sum" }
                             ]
                         }
                     ],
                     aggregate: [
                         {field: 'hours',aggregate: 'sum'}
                     ]
                });
                self.Grid.set("source", dataSource);

我应该怎么解决这个问题？