Não estou conseguindo rodar o npm start. Já tenho o node instalado.

 npm start

> AluraTyper@1.0.0 start C:\Users\Julian\Desktop\estudo front end\curso jquery\servidor
> node server

consign v0.1.2 Initialized in app
+ .\api\frases.js
+ .\api\placar.js
+ .\routes\frases.js
+ .\routes\placar.js
module.js:538
    throw err;
    ^

Error: Cannot find module 'underscore'
    at Function.Module._resolveFilename (module.js:536:15)
    at Function.Module._load (module.js:466:25)
    at Module.require (module.js:579:17)
    at require (internal/module.js:11:18)
    at Object.<anonymous> (C:\Users\Julian\Desktop\estudo front end\curso jquery\servidor\node_modules\nedb\lib\model.js:9:9)
    at Module._compile (module.js:635:30)
    at Object.Module._extensions..js (module.js:646:10)
    at Module.load (module.js:554:32)
    at tryModuleLoad (module.js:497:12)
    at Function.Module._load (module.js:489:3)
npm ERR! code ELIFECYCLE
npm ERR! errno 1
npm ERR! AluraTyper@1.0.0 start: `node server`
npm ERR! Exit status 1
npm ERR!
npm ERR! Failed at the AluraTyper@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\Julian\AppData\Roaming\npm-cache\_logs\2018-02-07T01_13_50_913Z-debug.log