React-Bootstrap无法在服务器端渲染React App中使用？

Question

我跟随this tutorial做一个服务器端渲染Web应用程序，但是当我尝试实现React-Router时，出现以下错误

Error: Element type is invalid: expected a string (for built-in components) or a 
class/function (for composite components) but got: undefined. You likely forgot to export
your component from the file it's defined in, or you might have mixed up default and named imports.

我一直在寻找解决方案，但似乎找不到解决方案，任何可能的输入都会很棒。

谢谢

Answer 1

发现问题出在进口中，必须按如下所述进行进口

import Button from 'react-bootstrap/Button'
import Form from 'react-bootstrap/Form'

也是将引导文件加载到引导文件的标准