节点。js错误错误:无法找到模块“mongoose”

C:\Users\Nick\Desktop\turntablefm\Bots\Super Bot>node bot.js

node.js:201
        throw e; // process.nextTick error, or 'error' event on first tick
              ^
Error: Cannot find module 'mongoose'
    at Function._resolveFilename (module.js:334:11)
    at Function._load (module.js:279:25)
    at Module.require (module.js:357:17)
    at require (module.js:368:17)
    at Object.<anonymous> (C:\Users\Nick\Desktop\turntablefm\Bots\Super Bot\db.j
s:1:78)
    at Module._compile (module.js:432:26)
    at Object..js (module.js:450:10)
    at Module.load (module.js:351:31)
    at Function._load (module.js:310:12)
    at Module.require (module.js:357:17)
C:\Users\Nick\Desktop\turntablefm\Bots\Super Bo