npm start esta dando erro

Estou tendo problemas ao executar npm start, tentei resolver vendo tutoriais mais ainda estou com dificuldades.

Aparece este problema:

 alurabank@1.0.0 start /home/grasiela/projetos/alurabank/alurabank
> node index.js

internal/modules/cjs/loader.js:638
    throw err;
    ^

Error: Cannot find module '/home/grasiela/projetos/alurabank/alurabank/index.js'
    at Function.Module._resolveFilename (internal/modules/cjs/loader.js:636:15)
    at Function.Module._load (internal/modules/cjs/loader.js:562:25)
    at Function.Module.runMain (internal/modules/cjs/loader.js:829:12)
    at startup (internal/bootstrap/node.js:283:19)
    at bootstrapNodeJSCore (internal/bootstrap/node.js:622:3)
npm ERR! code ELIFECYCLE
npm ERR! errno 1
npm ERR! alurabank@1.0.0 start: `node index.js`
npm ERR! Exit status 1
npm ERR! 
npm ERR! Failed at the alurabank@1.0.0 start script.
npm ERR! This is probably not a problem with npm. There is likely additional logging output above.
npm WARN Local package.json exists, but node_modules missing, did you mean to install?

npm ERR! A complete log of this run can be found in:
npm ERR!     /home/grasiela/.npm/_logs/2020-07-18T04_04_00_960Z-debug.log

Meu arquivo package.json está assim:

{
  "name": "alurabank",
  "version": "1.0.0",
  "description": "",
  "main": "index.js",
  "scripts": {
    "test": "echo \"Error: no test specified\" && exit 1",
    "start": "node index.js"
  },
  "keywords": [],
  "author": "",
  "license": "ISC"
}

Não sei como resolver???