address in use 에러 관련 질문입니다..

events.js:187

      throw er; // Unhandled 'error' event

      ^

Error: listen EADDRINUSE: address already in use :::7001

    at Server.setupListenHandle [as _listen2] (net.js:1300:14)

    at listenInCluster (net.js:1348:12)

    at Server.listen (net.js:1436:7)

    at Function.listen (C:\Users\zepet\Desktop\lecture\react-nodebird\ch1\back\node_modules\express\lib\application.js:618:24)

    at Object.<anonymous> (C:\Users\zepet\Desktop\lecture\react-nodebird\ch1\back\index.js:16:5)

    at Module._compile (internal/modules/cjs/loader.js:956:30)

    at Object.Module._extensions..js (internal/modules/cjs/loader.js:973:10)

    at Module.load (internal/modules/cjs/loader.js:812:32)

    at Function.Module._load (internal/modules/cjs/loader.js:724:14)

    at Function.Module.runMain (internal/modules/cjs/loader.js:1025:10)

    at internal/main/run_main_module.js:17:11

Emitted 'error' event on Server instance at:

    at emitErrorNT (net.js:1327:8)

    at processTicksAndRejections (internal/process/task_queues.js:80:21) {

  code: 'EADDRINUSE',

  errno: 'EADDRINUSE',

  syscall: 'listen',

  address: '::',

  port: 7001

}

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

해당코드이며 

현재 mysql --version 결과

mysql  Ver 14.14 Distrib 5.7.28, for Win64 (x86_64)

사용중입니다. root 계정에 처음에 설치할 떄 ip를 7001로 설정하고 진행을 하였고 react 소스에 7001로 하면 저런 에러가 떨어지고 다른 계정은 root계정과 비번이 안맞다고 나옵니다.. 해당 에러 문의드립니다.