Cannot start the application. Error: Cannot find module 'lb4/lb3app/server/server'

[anudhuri23]

I am trying to migrate our existing loopback3 application into loopback4
I followed the steps from https://github.com/loopbackio/loopback-next/tree/master/examples/lb3-application
When I am running npm start, I am getting below error
Cannot start the application. Error: Cannot find module '/home/lcuser/src/middleware-graphql-lb4/lb3app/server/server'
is it trying to find dir?
When I command ls I got bellow

Please help me on this
Whole stack
`Cannot start the application. Error: Cannot find module '/home/lcuser/src/middleware-graphql-lb4/lb3app/server/server'
Require stack:

• /home/lcuser/src/middleware-graphql-lb4/node_modules/@loopback/booter-lb3app/dist/lb3app.booter.js
• /home/lcuser/src/middleware-graphql-lb4/node_modules/@loopback/booter-lb3app/dist/lb3app.booter.component.js
• /home/lcuser/src/middleware-graphql-lb4/node_modules/@loopback/booter-lb3app/dist/index.js
• /home/lcuser/src/middleware-graphql-lb4/dist/application.js
• /home/lcuser/src/middleware-graphql-lb4/dist/index.js
  at Function.Module._resolveFilename (node:internal/modules/cjs/loader:1075:15)
  at Function.Module._load (node:internal/modules/cjs/loader:920:27)
  at Module.require (node:internal/modules/cjs/loader:1141:19)
  at require (node:internal/modules/cjs/helpers:110:18)
  at Lb3AppBooter.loadAndBootTheApp (/home/lcuser/src/middleware-graphql-lb4/node_modules/@loopback/booter-lb3app/src/lb3app.booter.ts:98:20)
  at Lb3AppBooter.load (/home/lcuser/src/middleware-graphql-lb4/node_modules/@loopback/booter-lb3app/src/lb3app.booter.ts:57:31)
  at Bootstrapper.boot (/home/lcuser/src/middleware-graphql-lb4/node_modules/@loopback/boot/src/bootstrapper.ts:123:28)
  at MiddlewareGraphqlLb4Application.boot (/home/lcuser/src/middleware-graphql-lb4/node_modules/@loopback/boot/src/mixins/boot.mixin.ts:112:7)
  at main (/home/lcuser/src/middleware-graphql-lb4/src/index.ts:7:3) {
  code: 'MODULE_NOT_FOUND',
  requireStack: [
  '/home/lcuser/src/middleware-graphql-lb4/node_modules/@loopback/booter-lb3app/dist/lb3app.booter.js',
  '/home/lcuser/src/middleware-graphql-lb4/node_modules/@loopback/booter-lb3app/dist/lb3app.booter.component.js',
  '/home/lcuser/src/middleware-graphql-lb4/node_modules/@loopback/booter-lb3app/dist/index.js',
  '/home/lcuser/src/middleware-graphql-lb4/dist/application.js',
  '/home/lcuser/src/middleware-graphql-lb4/dist/index.js'
  ]
  }
  `