npm start error

C:\code\thinkful\tc\alyrlee\4.10-bookmarks-server>npm start

> express-boilerplate-project@1.0.0 start C:\code\thinkful\tc\alyrlee\4.10-bookmarks-server
> node src/server.js

internal/modules/cjs/loader.js:797
    throw err;
    ^

Error: Cannot find module './bookmarks/bookmarks-router'
Require stack:
- C:\code\thinkful\tc\alyrlee\4.10-bookmarks-server\src\app.js
- C:\code\thinkful\tc\alyrlee\4.10-bookmarks-server\src\server.js
    at Function.Module._resolveFilename (internal/modules/cjs/loader.js:794:15)
    at Function.Module._load (internal/modules/cjs/loader.js:687:27)
    at Module.require (internal/modules/cjs/loader.js:849:19)
    at require (internal/modules/cjs/helpers.js:74:18)
    at Object.<anonymous> (C:\code\thinkful\tc\alyrlee\4.10-bookmarks-server\src\app.js:9:25)
    at Module._compile (internal/modules/cjs/loader.js:956:30)
    at Object.Module._extensions..js (internal/modules/cjs/loader.js:973:10)
    at Module.load (internal/modules/cjs/loader.js:812:32)
    at Function.Module._load (internal/modules/cjs/loader.js:724:14)
    at Module.require (internal/modules/cjs/loader.js:849:19) {
  code: 'MODULE_NOT_FOUND',
  requireStack: [
    'C:\\code\\thinkful\\tc\\alyrlee\\4.10-bookmarks-server\\src\\app.js',
    'C:\\code\\thinkful\\tc\\alyrlee\\4.10-bookmarks-server\\src\\server.js'
  ]
}
npm ERR! code ELIFECYCLE
npm ERR! errno 1
npm ERR! express-boilerplate-project@1.0.0 start: `node src/server.js`
npm ERR! Exit status 1
npm ERR!
npm ERR! Failed at the express-boilerplate-project@1.0.0 start script.
npm ERR! This is probably not a problem with npm. There is likely additional logging output above.

npm ERR! A complete log of this run can be found in:
npm ERR!     C:\Users\changc16\AppData\Roaming\npm-cache\_logs\2020-07-14T15_19_10_995Z-debug.log