use easywebpack cli to initialize a application which use egg@2.19.1 , start node server by npm run dev, all static resouces 404

[xiaoyanzheng]

A clear and concise description of what the bug is.
egg 2.19.1 use easywebpack cli init application , start node server by npm run dev, all static resouces 404

Mini Showcase Repository(REQUIRED)
Provide a mini GitHub repository which can reproduce the issue.
Use npm init egg --type=simple bug then upload to your GitHub
https://user-images.githubusercontent.com/7248432/98068835-2cc67d00-1e98-11eb-85d9-ddfb92e6b5a1.png
How To Reproduce
Steps to reproduce the behavior:

npm i @easy-team/easywebpack-cli -g
init Egg + Vue + TypeScript Server Side Render Application (application name: demo)
easy init
https://user-images.githubusercontent.com/7248432/98068577-634fc800-1e97-11eb-848c-630424b36b93.png
cd demo
npm install
npm run dev
Expected behavior

all static resources requests are responded by 200 status
Context
Node Version: v12.6.0
Egg Version: 2.19.1
Plugin Name:
Plugin Version:
Platform: mac

[xiaoyanzheng]

downgrade egg from 2.19.1 to 2.17.0 can resolve problem，why？