slack 클론코딩 npm install 에러가 납니다

제로초님 ㅠㅠ 아까 말씀해주신대로 성공하고 난 후에 mySQL DB 생성까지는 완료되었는데, npm run dev 해보니까 이렇게 오류 메세지가 뜨네요.. 구글링 해보니까 node modules 삭제 후 재설치 혹은 node port 죽이기 이런 방법들이 나오는데어떻게 해결해야 할까요 ㅠㅠ  npm run dev > sleact-ts-back@1.0.0 dev > nodemon app [nodemon] 2.0.7 [nodemon] to restart at any time, enter `rs` [nodemon] watching path(s): *.* [nodemon] watching extensions: js,mjs,json [nodemon] starting `node app.js` node:events:498 throw er; // Unhandled 'error' event ^ Error: listen EADDRINUSE: address already in use :::3095 at Server.setupListenHandle [as _listen2] (node:net:1330:16) at listenInCluster (node:net:1378:12) at Server.listen (node:net:1465:7) at Function.listen (/Users/bboyooning/Desktop/sleact/back/node_modules/express/lib/application.js:618:24) at Object. (/Users/bboyooning/Desktop/sleact/back/app.js:69:20) at Module._compile (node:internal/modules/cjs/loader:1103:14) at Object.Module._extensions..js (node:internal/modules/cjs/loader:1155:10) at Module.load (node:internal/modules/cjs/loader:981:32) at Function.Module._load (node:internal/modules/cjs/loader:822:12) at Function.executeUserEntryPoint [as runMain] (node:internal/modules/run_main:77:12) Emitted 'error' event on Server instance at: at emitErrorNT (node:net:1357:8) at processTicksAndRejections (node:internal/process/task_queues:83:21) { code: 'EADDRINUSE', errno: -48, syscall: 'listen', address: '::', port: 3095 } [nodemon] app crashed - waiting for file changes before starting...