제로초님 오류 관련 질문이요..

[nodemon] 1.19.1

[nodemon] to restart at any time, enter `rs`

[nodemon] watching: index.js routes C:\choWitter\ch1\back\config/**/* passport C:\choWitter\ch1\back\models/**/* nodemon.json

[nodemon] starting `node index.js`

events.js:183

      throw er; // Unhandled 'error' event

      ^

Error: listen EADDRINUSE :::3065

    at Object._errnoException (util.js:992:11)

    at _exceptionWithHostPort (util.js:1014:20)

    at Server.setupListenHandle [as _listen2] (net.js:1355:14)

    at listenInCluster (net.js:1396:12)

    at Server.listen (net.js:1480:7)

    at Function.listen (C:\choWitter\ch1\back\node_modules\express\lib\application.js:618:24)

    at Object.<anonymous> (C:\choWitter\ch1\back\index.js:16:5)

    at Module._compile (module.js:652:30)

    at Object.Module._extensions..js (module.js:663:10)

    at Module.load (module.js:565:32)

    at tryModuleLoad (module.js:505:12)

    at Function.Module._load (module.js:497:3)

    at Function.Module.runMain (module.js:693:10)

    at startup (bootstrap_node.js:191:16)

    at bootstrap_node.js:612:3

[nodemon] app crashed - waiting for file changes before starting...

이게 무슨 에러인가요?