8080 서버가 안열려요

강의 들으면서 server.js 파일 만든 뒤에 터미널에 node server.js를 입력하니까 

node:internal/modules/cjs/loader:452
      throw err;
      ^

Error: Cannot find module 'C:\Users\USER\OneDrive\바탕 화면\node-project\node_modules\express\server.js'. Please verify that the package.json has a valid "main" entry
    at tryPackage (node:internal/modules/cjs/loader:444:19)
    at Module._findPath (node:internal/modules/cjs/loader:715:18)
    at Module._resolveFilename (node:internal/modules/cjs/loader:1130:27)
    at Module._load (node:internal/modules/cjs/loader:985:27)
    at Module.require (node:internal/modules/cjs/loader:1235:19)
    at require (node:internal/modules/helpers:176:18)
    at Object.<anonymous> (C:\Users\USER\OneDrive\바탕 화면\node-project\server.js:1:17)
    at Module._compile (node:internal/modules/cjs/loader:1376:14)
    at Module._extensions..js (node:internal/modules/cjs/loader:1435:10)
    at Module.load (node:internal/modules/cjs/loader:1207:32) {
  code: 'MODULE_NOT_FOUND',
  path: 'C:\\Users\\USER\\OneDrive\\바탕 화면\\node-project\\node_modules\\express\\package.json',
  requestPath: 'express'
} 이런 오류가 나는데 해결해주실 수 있을까요 ㅠ