我遵循https://dev.to/smithmanny/deploy-your-react-app-to-heroku-2b6f中的教程。一切工作正常，我通过添加名为webpack-cli的新对象完成了package.json的配置，但是当我打开应用程序时，它显示应用程序错误，并且运行此命令engines，并在下面显示错误。
heroku logs --tail这是我的package.json
2020-11-06T10:18:19.369209+00:00 heroku[web.1]: State changed from starting to crashed
2020-11-06T10:20:14.005978+00:00 heroku[router]: at=error code=H10 desc="App crashed" method=GET path="/" host=immense-beyond-93095.herokuapp.com request_id=6563476d-6eb0-47ad-8c85-39d457e22a20 fwd="110.54.238.117" dyno= connect= service= status=503 bytes= protocol=https
=immense-beyond-93095.herokuapp.com request_id=6597bf5d-2d7f-477f-a893-aef0cb946619 fwd="110.54.238.117" dyno= connect= s=immense-beyond-93095.herokuapp.com reqervice= status=503 bytes= protocol=https
这是站点{
"name": "uncle-edge-website",
"version": "1.0.0",
"description": "Uncle Edge Unli Wings",
"private": true,
"main": "src/index.js",
"engines": {
"npm": "6.14.4",
"node": "12.16.2"
},
"dependencies": {
"@material-ui/core": "4.10.0",
"@material-ui/icons": "4.9.1",
"classnames": "2.2.6",
"history": "4.10.1",
"moment": "2.26.0",
"node-sass": "4.14.1",
"nouislider": "14.5.0",
"prop-types": "15.7.2",
"react": "16.13.1",
"react-datetime": "2.16.3",
"react-dom": "16.13.1",
"react-router-dom": "5.2.0",
"react-scripts": "3.4.1",
"react-slick": "0.26.1",
"react-swipeable-views": "0.13.9"
},
"devDependencies": {
"@babel/cli": "7.10.1",
"@babel/plugin-proposal-class-properties": "7.10.1",
"@babel/preset-env": "7.10.1",
"@babel/preset-react": "7.10.1",
"eslint-config-prettier": "6.11.0",
"eslint-plugin-prettier": "3.1.3",
"eslint-plugin-react": "7.20.0",
"gulp": "4.0.2",
"gulp-append-prepend": "1.0.8",
"prettier": "2.0.5"
},
"optionalDependencies": {
"typescript": "3.9.3"
},
"scripts": {
"start": "react-scripts start",
"build": "react-scripts build && gulp licenses",
"test": "react-scripts test --env=jsdom",
"eject": "react-scripts eject",
"lint:check": "eslint . --ext=js,jsx; exit 0",
"lint:fix": "eslint . --ext=js,jsx --fix; exit 0",
"install:clean": "rm -rf node_modules/ && rm -rf package-lock.json && npm install && npm start",
"build-package-css": "node-sass src/assets/scss/material-kit-react.scss dist/material-kit-react.css",
"build-package": "npm run build-package-css && babel src --out-dir dist",
"compile-sass": "node-sass src/assets/scss/material-kit-react.scss src/assets/css/material-kit-react.css",
"minify-sass": "node-sass src/assets/scss/material-kit-react.scss src/assets/css/material-kit-react.min.css --output-style compressed",
"map-sass": "node-sass src/assets/scss/material-kit-react.scss src/assets/css/material-kit-react.css --source-map true"
},
"browserslist": {
"production": [
">0.2%",
"not dead",
"not op_mini all"
],
"development": []
}
}