[Bug] plugin-qiankun examples 热更新之后页面白屏 控制台报错

[h541184072]

What happens?

plugin-qiankun examples 服务起来之后正常 但是随便在一个地方改一下东西保存之后 热更新之后页面白屏 控制台报错

Mini Showcase Repository(REQUIRED)

https://github.com/umijs/plugins

How To Reproduce

**Steps to reproduce the behavior:

yarn
yarn build
cd packages/plugin-qiankun && yarn && yarn start

http://localhost:8000/app2

在 /plugin-qiankun/examples/master/pages/app2/index.js 随便改下代码 console一下 保存之后页面热更新白屏

Expected behavior 没报错.

Context

• Umi Version:^3.2.21
• Node Version:v12.19.0
• Platform:webstorm

[fxxjdedd]

Try to fix it in umijs/plugins#629