Why my Univer Sheet doesn't have any row?

[zjufqx]

Here's my main.ts code:
// 导入Vue和App
import { createApp } from 'vue'
import './style.css'
import App from './App.vue'

// 导入Univer的样式文件
import "@univerjs/design/lib/index.css";
import "@univerjs/ui/lib/index.css";
import "@univerjs/docs-ui/lib/index.css";
import "@univerjs/sheets-ui/lib/index.css";
import "@univerjs/sheets-formula/lib/index.css";

// 导入Univer的插件
import {Univer, UniverInstanceType} from "@univerjs/core";
import { defaultTheme } from "@univerjs/design";
import { UniverFormulaEnginePlugin } from "@univerjs/engine-formula";
import { UniverRenderEnginePlugin } from "@univerjs/engine-render";
import { UniverUIPlugin } from "@univerjs/ui";
import { UniverDocsPlugin } from "@univerjs/docs";
import { UniverDocsUIPlugin } from "@univerjs/docs-ui";
import { UniverSheetsPlugin } from "@univerjs/sheets";
import { UniverSheetsFormulaPlugin } from "@univerjs/sheets-formula";
import { UniverSheetsUIPlugin } from "@univerjs/sheets-ui";

// 创建一个Univer实例，并注册这些插件
const univer = new Univer({
theme: defaultTheme,
});

univer.registerPlugin(UniverRenderEnginePlugin);
univer.registerPlugin(UniverFormulaEnginePlugin);
univer.registerPlugin(UniverUIPlugin, {
container: 'app',
header: true,
footer: true,
});
univer.registerPlugin(UniverDocsPlugin, {
hasScroll: false,
});
univer.registerPlugin(UniverDocsUIPlugin);
univer.registerPlugin(UniverSheetsPlugin);
univer.registerPlugin(UniverSheetsUIPlugin);
univer.registerPlugin(UniverSheetsFormulaPlugin);
univer.createUnit(UniverInstanceType.UNIVER_SHEET, {});

// 创建Vue应用
createApp(App).mount('#app')

Then I run 'npm run dev' in terminal and open web page, I found that my Univer Sheet doesn't have any row. Has anybody met before？