puppeteer: 表格填好后怎么点击保存按钮？

表单填写完成后如何点击保存按钮？

<div class="MuiDialogActions-root MuiDialogActions-spacing">
   <button class="MuiButtonBase-root MuiButton-root MuiButton-outlined MuiButton-outlinedPrimary" tabindex="0" type="button">
     <span class="MuiButton-label">Cancel</span>
     <span class="MuiTouchRipple-root"></span>
  </button>
  <button class="MuiButtonBase-root MuiButton-root MuiButton-contained MuiButton-containedPrimary" tabindex="0" type="submit">
     <span class="MuiButton-label">Save</span>
     <span class="MuiTouchRipple-root"></span>
   </button>
</div>

我建议的解决方案是：

await page.waitForSelector('.MuiButton-label')
await page.click('.MuiButtonBase-label[name=save]')

但它不起作用。