ajuda

no meu apareceu esse erro ::

npm run start-auth

> json-server-api@1.0.0 start-auth
> node server.js

internal/modules/cjs/loader.js:818
  throw err;
  ^

Error: Cannot find module 'body-parser'
Require stack:
- /mnt/c/api-alurabooks/server.js
    at Function.Module._resolveFilename (internal/modules/cjs/loader.js:815:15)
    at Function.Module._load (internal/modules/cjs/loader.js:667:27)
    at Module.require (internal/modules/cjs/loader.js:887:19)
    at require (internal/modules/cjs/helpers.js:74:18)
    at Object.<anonymous> (/mnt/c/api-alurabooks/server.js:2:20)
    at Module._compile (internal/modules/cjs/loader.js:999:30)
    at Object.Module._extensions..js (internal/modules/cjs/loader.js:1027:10)
    at Module.load (internal/modules/cjs/loader.js:863:32)
    at Function.Module._load (internal/modules/cjs/loader.js:708:14)
    at Function.executeUserEntryPoint [as runMain] (internal/modules/run_main.js:60:12) {
  code: 'MODULE_NOT_FOUND',
  requireStack: [ '/mnt/c/api-alurabooks/server.js' ]