我有一个角度的网站，我试图主持在Heroku。 下面是我的server.js文件，它显示了我要使用的路径。 server.js文件

但是，我在构建之后得到了这个错误。 Heroku原木

这是我的应用程序目录。 应用程序设置

这是我第一次尝试主持一个角度的网站，所以我不是很熟悉。 但是从我所知道的情况来看，我想要的是dist/dashboard目录中index.html文件的路径。 这似乎是正在发生的事情。 我已经尝试删除“__dirname”，但这也不起作用。 如有任何帮助，我们将不胜感激。

编辑:这是我的package.json

{
"name": "dashboard",
"version": "0.0.0",
"scripts": {
"ng": "ng",
"start": "node server.js",
"build": "ng build",
"test": "ng test",
"lint": "ng lint",
"e2e": "ng e2e",
"“heroku-postbuild": "ng build --prod"
},
"private": true,
"dependencies": {
"@angular/animations": "^9.0.7",
"@angular/cdk": "^9.2.0",
"@angular/cli": "~9.0.7",
"@angular/common": "~9.0.7",
"@angular/compiler": "~9.0.7",
"@angular/compiler-cli": "~9.0.7",
"@angular/core": "~9.0.7",
"@angular/flex-layout": "^9.0.0-beta.29",
"@angular/forms": "~9.0.7",
"@angular/material": "^9.2.0",
"@angular/platform-browser": "~9.0.7",
"@angular/platform-browser-dynamic": "~9.0.7",
"@angular/router": "~9.0.7",
"core-js": "^3.6.4",
"enhanced-resolve": "^4.3.0",
"express": "^4.17.1",
"highcharts": "^8.1.2",
"highcharts-angular": "^2.4.0",
"path": "^0.12.7",
"rxjs": "~6.5.4",
"tslib": "^1.10.0",
"typescript": "~3.7.5",
"zone.js": "~0.10.2"
},
"devDependencies": {
"@angular-devkit/build-angular": "^0.1000.4",
"@angular/cli": "~9.0.7",
"@angular/compiler-cli": "~9.0.7",
"@angular/language-service": "~9.0.7",
"@types/jasmine": "~3.5.0",
"@types/jasminewd2": "~2.0.3",
"@types/node": "^12.11.1",
"angular-cli-ghpages": "^0.6.2",
"codelyzer": "^5.1.2",
"jasmine-core": "~3.5.0",
"jasmine-spec-reporter": "~4.2.1",
"karma": "~4.3.0",
"karma-chrome-launcher": "~3.1.0",
"karma-coverage-istanbul-reporter": "~2.1.0",
"karma-jasmine": "~2.0.1",
"karma-jasmine-html-reporter": "^1.4.2",
"protractor": "~5.4.3",
"ts-node": "~8.3.0",
"tslint": "~5.18.0",
"typescript": "~3.7.5"
},
"engines": {
"node": "12.16.1",
"npm": "6.13.4"
}

}