Do check that you have imported the scripts and styles at the correct place in angular.json
{
"$schema": "./node_modules/@angular/cli/lib/config/schema.json",
"version": 1,
"newProjectRoot": "projects",
"projects": {
"nvh-admin-portal": {
"projectType": "application",
"schematics": {
"@schematics/angular:application": {
"strict": true
}
},
"root": "",
"sourceRoot": "src",
"prefix": "app",
"architect": {
"build": {
"builder": "@angular-devkit/build-angular:browser",
"options": {
"outputPath": "dist/nvh-admin-portal",
"index": "src/index.html",
"main": "src/main.ts",
"polyfills": "src/polyfills.ts",
"tsConfig": "tsconfig.app.json",
"assets": [
"src/favicon.ico",
"src/assets"
],
"styles": [
"src/styles.css",
"node_modules/datatables.net-dt/css/jquery.dataTables.min.css",
"node_modules/datatables.net-buttons-dt/css/buttons.dataTables.css"
],
"scripts": [
"node_modules/jquery/dist/jquery.min.js",
"node_modules/datatables.net/js/jquery.dataTables.min.js",
"node_modules/jszip/dist/jszip.js",
"node_modules/datatables.net-buttons/js/dataTables.buttons.js",
"node_modules/datatables.net-buttons/js/buttons.colVis.js",
"node_modules/datatables.net-buttons/js/buttons.flash.js",
"node_modules/datatables.net-buttons/js/buttons.html5.js",
"node_modules/datatables.net-buttons/js/buttons.print.js"
]
},
"configurations": {
"production": {
"budgets": [
{
"type": "initial",
"maximumWarning": "500kb",
"maximumError": "1mb"
},
{
"type": "anyComponentStyle",
"maximumWarning": "2kb",
"maximumError": "4kb"
}
],
"fileReplacements": [
{
"replace": "src/environments/environment.ts",
"with": "src/environments/environment.prod.ts"
}
],
"outputHashing": "all"
},
"test": {
"budgets": [
{
"type": "initial",
"maximumWarning": "1mb",
"maximumError": "1.5mb"
},
{
"type": "anyComponentStyle",
"maximumWarning": "3kb",
"maximumError": "5kb"
}
],
"fileReplacements": [
{
"replace": "src/environments/environment.ts",
"with": "src/environments/environment.test.ts"
}
],
"outputHashing": "all"
},
"development": {
"buildOptimizer": false,
"optimization": false,
"vendorChunk": true,
"extractLicenses": false,
"sourceMap": true,
"namedChunks": true
}
},
"defaultConfiguration": "production"
},
"serve": {
"builder": "@angular-devkit/build-angular:dev-server",
"configurations": {
"production": {
"browserTarget": "nvh-admin-portal:build:production"
},
"development": {
"browserTarget": "nvh-admin-portal:build:development"
}
},
"defaultConfiguration": "development"
},
"extract-i18n": {
"builder": "@angular-devkit/build-angular:extract-i18n",
"options": {
"browserTarget": "nvh-admin-portal:build"
}
},
"test": {
"builder": "@angular-devkit/build-angular:karma",
"options": {
"main": "src/test.ts",
"polyfills": "src/polyfills.ts",
"tsConfig": "tsconfig.spec.json",
"karmaConfig": "karma.conf.js",
"assets": [
"src/favicon.ico",
"src/assets"
],
"styles": [
"src/styles.css",
"nvh-admin-portal/node_modules/bootstrap/dist/css/bootstrap.min.css",
"nvh-admin-portal/node_modules/font-awesome/css/font-awesome.css"
],
"scripts": [
"nvh-admin-portal/node_modules/jquery/dist/jquery.min.js",
"nvh-admin-portal/node_modules/bootstrap/dist/js/bootstrap.min.js"
]
}
}
}
}
},
"defaultProject": "nvh-admin-portal"
}