Node.js 我的客户端没有在aws（amazon）Ec2实例上工作

我的项目在MERN（MongoDB、express、react和node）堆栈中。我的客户端不在Amazon实例上工作，但同一个客户端文件夹在heroku上正常工作。我通过运行命令npm build创建了构建文件夹，并将该构建文件夹上传到Amazon实例上。我的后端工作正常，但前端不工作。 我正在分享所有屏幕截图

我还在客户端共享我的package.json文件…通过创建npm run build命令，使用我创建的构建文件夹中的文件。可能存在一些问题，但该构建文件夹在heroku上正常工作 客户端中的Package.json文件

  {
  "name": "now-ui-kit-react",
  "version": "1.0.0",
  "private": true,
  "dependencies": {
    "@material-ui/core": "^4.9.14",
    "@material-ui/lab": "^4.0.0-alpha.53",
    "@pathofdev/react-tag-input": "^1.0.7",
    "async": "^3.1.0",
    "aws-sdk": "^2.682.0",
    "axios": "^0.19.2",
    "bcrypt": "^3.0.6",
    "body-parser": "^1.19.0",
    "bootstrap": "^4.4.1",
    "cookie-parser": "^1.4.3",
    "cors": "^2.8.5",
    "express": "^4.17.1",
    "jsonwebtoken": "^8.5.1",
    "mdbootstrap": "^4.16.0",
    "mdbreact": "^4.25.6",
    "moment": "2.24.0",
    "mongoose": "^5.4.20",
    "move-file": "^2.0.0",
    "multer": "^1.4.2",
    "multer-s3": "^2.9.0",
    "node-sass": "^4.14.1",
    "nouislider": "14.0.2",
    "npm": "^6.14.5",
    "path": "^0.12.7",
    "progressbar": "^1.3.0",
    "react": "^16.8.6",
    "react-apple-login": "^1.0.11",
    "react-audio-player": "^0.13.0",
    "react-audio-waveform": "0.0.5",
    "react-bootstrap": "^1.0.0",
    "react-bootstrap-switch": "15.5.3",
    "react-datetime": "2.16.3",
    "react-dom": "16.8.6",
    "react-facebook-login": "^4.1.1",
    "react-google-login": "^5.1.3",
    "react-howler": "^3.7.4",
    "react-redux": "^5.0.7",
    "react-router": "5.0.1",
    "react-router-dom": "5.0.1",
    "react-scripts": "^3.4.1",
    "react-soundplayer": "^1.0.4",
    "react-wavesurfer": "^0.8.6",
    "reactstrap": "8.0.1",
    "semantic-ui-react": "^0.88.2",
    "socket.io": "^2.2.0",
    "socket.io-client": "^2.3.0",
    "styled-components": "^5.1.0",
    "use-global-hook": "^0.1.12",
    "waveform-data": "^1.4.3",
    "wavesurfer.js": "^2.0.0-beta01"
  },
  "scripts": {
    "start": "react-scripts start",
    "build": "react-scripts build",
    "test": "react-scripts test",
    "eject": "react-scripts eject",
    "install:clean": "rm -rf node_modules/ && rm -rf package-lock.json && npm install && npm start",
    "compile-sass": "node-sass src/assets/scss/now-ui-kit.scss src/assets/css/now-ui-kit.css",
    "minify-sass": "node-sass src/assets/scss/now-ui-kit.scss src/assets/css/now-ui-kit.min.css --output-style compressed",
    "map-sass": "node-sass src/assets/scss/now-ui-kit.scss src/assets/css/now-ui-kit.css --source-map true"
  },
  "eslintConfig": {
    "extends": "react-app"
  },
  "browserslist": {
    "production": [
      ">0.2%",
      "not dead",
      "not op_mini all"
    ],
    "development": [
      "last 1 chrome version",
      "last 1 firefox version",
      "last 1 safari version"
    ]
  },
  "optionalDependencies": {
    "typescript": "3.5.3"
  }
}

构建文件夹中的我的索引文件（我通过npm运行构建创建了构建文件夹）

Musicmax
您需要启用JavaScript才能运行此应用程序。
!函数（l）{function e（e）{for（var r，t，n=e[0]，o=e[1]，u=e[2]，f=0，i=[]；f在运行npm run build之后，我运行命令SERVICE-s build，我可以在本地机器上轻松访问我的客户端。这意味着我的客户端构建文件夹工作正常。amazon实例出现了一些问题
我解决了我的问题，实际上所有的事情都很好。只有一行出现了问题

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当我删除该行时，一切正常。现在查询结束。谢谢大家

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