uni-app 使用ucharts(非uni_modules) 组件，不连网会报错，连上网就正常。

11:30:36.515 [Vue warn]: Failed to resolve async component: function (resolve) {
var component = {
component: Promise.all(/! require.ensure | pages-ucharts-ucharts /[webpack_require.e("pages-canvas-canvas~pages-echarts-echarts~pages-format-e-format-e~pages-format-u-format-u~pages-layo~5fc7983c"), webpack_require.e("pages-echarts-echarts~pages-format-e-format-e~pages-format-u-format-u~pages-layout-layout~pages-othe~e410e925"), webpack_require.e("pages-canvas-canvas~pages-echarts-echarts~pages-format-e-format-e~pages-format-u-format-u~pages-layo~017ae7e7"), webpack_require.e("pages-ucharts-ucharts")]).then((function () {return resolve(webpack_require__(/! C:/Users/zhouzg/Downloads/uCharts-master/uni-app/示例项目/组件/qiun-data-charts(非uni_modules)/pages/ucharts/ucharts.vue / "8Dkq"));}).bind(null, webpack_require)).catch(webpack_require.oe),
delay: uniConfig['async'].delay,
timeout: __uniConfig['async'].timeout };

if (uniConfig['async']['loading']) {
component.loading = {
name: 'SystemAsyncLoading',
render: function render(createElement) {
return createElement(uniConfig['async']['loading']);
} };

}
if (uniConfig['async']['error']) {
component.error = {
name: 'SystemAsyncError',
render: function render(createElement) {
return createElement(uniConfig['async']['error']);
} };

}
return component;
}
Reason: TypeError: Cannot read property 'length' of undefined