Navbar не расширяется на мобильных устройствах

Question

Я работаю над проектом angular, в котором есть компонент navbar. Панель навигации не расширяется на мобильных устройствах. Когда я пытаюсь протестировать панель навигации на любых мобильных устройствах, она выдает ошибку в консоли, как показано на изображении ниже, я перепробовал множество исправлений, но ничего не помогло, может кто-нибудь помочь?

Я использую последнюю версию bootstrap и Jquery.

navbar.component. html

<nav class="navbar navbar-expand-sm navbar-light bg-light" *ngIf="nav.visible">
    <button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarSupportedContent"
    aria-controls="navbarSupportedContent" aria-expanded="false" aria-label="Toggle navigation">
    <span class="navbar-toggler-icon"></span>
  </button>
  <a class="navbar-brand">GoNews</a>

  <div class="collapse navbar-collapse " id="navbarSupportedContent">
    <ul class="navbar-nav mr-auto mt-2 mt-lg-0">
      <li class="nav-item">
        <a class="nav-link" routerLink="/homepage">Home <span class="sr-only">(current)</span></a>
      </li>
      <li #drop class=" nav-item dropdown dmenu">
        <a class="nav-link dropdown-toggle" data-toggle="dropdown" aria-expanded="false" routerLink="/category"
        id="navbardrop">
        Categories
      </a>
      <div class="dropdown-menu dmenu">
        <a class="dropdown-item text-light" *ngFor="let catlog of dropDownCategories"
        (click)="getTitle(catlog.category_name)">{{catlog.displayname}}</a>
      </div>
    </li>

    <li class="nav-item dropdown dmenu ">
      <a href="#" class="nav-link dropdown-toggle" data-toggle="dropdown" role="button" aria-expanded="false">
        Notifiation<span class="caret"></span></a>
        <ul class="dropdown-menu dropdown-cart" role="menu">
          <li *ngFor="let notification of holdNotifications">
            <span class="item">
              <span class="item-left">
                <img src="{{notification.image}}" alt="" style="width: 50px;" />
                <span class="item-info">
                  <span class="text-light">{{notification.name}}</span>

                </span>
              </span>
              <span class="item-right">
                <button class="btn btn-xs btn-danger pull-right">x</button>
              </span>
            </span>
            <hr>
          </li>
        </ul>
      </li>
    </ul>
    <ul class="navbar-nav ml-auto">
      <li class="nav-item">
        <a class="nav-link" (click)="signOut()">Sign-Out</a>
      </li>
    </ul>
  </div>
  </nav>

navbar.component. css

.navbar{
    background: hsl(210, 3%, 28%) !important;
}

.dropdown{
    border-radius:0;
    border:0;
}
.dropdown-menu{
    background: hsl(210, 3%, 28%);
    border:0;
    top:80%;
    border-radius:0px 0px 5px 5px;
}
.dropdown-item:hover{
    background:hsl(0, 85%, 55%);
    color:#fff;
}
.dropdown-menu a:hover{
    color:#fff;
} 
.navbar .nav-item .nav-link{
    color:#eee !important; 

}
.navbar .nav-item .nav-link:hover .navbar .nav-item .nav-link{
    color:red !important;
}


ul.dropdown-cart{
    min-width:400px;
}
ul.dropdown-cart li .item{
    display:block;
    padding:3px 10px;
    margin: 3px 0;
}
ul.dropdown-cart li .item:hover{
    background-color:red;
}
ul.dropdown-cart li .item:after{
    visibility: hidden;
    display: block;
    font-size: 0;
    content: " ";
    clear: both;
    height: 0;
}

ul.dropdown-cart li .item-left{
    float:left;
}
ul.dropdown-cart li .item-left img,
ul.dropdown-cart li .item-left span.item-info{
    float:left;
}
ul.dropdown-cart li .item-left span.item-info{
    margin-left:30px;   
}
ul.dropdown-cart li .item-left span.item-info span{
    display:block;
}
ul.dropdown-cart li .item-right{
    float:right;
}
ul.dropdown-cart li .item-right button{
    margin-top:10px;
}  

angular. json

{
  "$schema": "./node_modules/@angular/cli/lib/config/schema.json",
  "version": 1,
  "newProjectRoot": "projects",
  "projects": {
    "gonews": {
      "projectType": "application",
      "schematics": {},
      "root": "",
      "sourceRoot": "src",
      "prefix": "app",
      "architect": {
        "build": {
          "builder": "@angular-devkit/build-angular:browser",
          "options": {
            "outputPath": "dist/gonews",
            "index": "src/index.html",
            "main": "src/main.ts",
            "polyfills": "src/polyfills.ts",
            "tsConfig": "tsconfig.app.json",
            "aot": true,
            "assets": [
              "src/favicon.ico",
              "src/assets",
              "src/assets/bgimg.jpg"
            ],
            "styles": [
              "src/styles.css",
              "./node_modules/bootstrap/dist/css/bootstrap.min.css",
              "./node_modules/owl.carousel/dist/assets/owl.carousel.min.css",
              "./node_modules/owl.carousel/dist/assets/owl.theme.default.min.css",
              "./node_modules/animate.css",
              "./node_modules/magnific-popup/dist/magnific-popup.css",
              "./node_modules/font-awesome/css/font-awesome.min.css"
            ],
            "scripts": [
              "./node_modules/jquery/dist/jquery.min.js",
              "./node_modules/popper.js/dist/umd/popper.min.js",
              "./node_modules/bootstrap/dist/js/bootstrap.min.js",
              "./node_modules/magnific-popup/dist/jquery.magnific-popup.min.js",
              "./node_modules/owl.carousel/dist/owl.carousel.min.js"


            ]
          },
          "configurations": {
            "production": {
              "fileReplacements": [
                {
                  "replace": "src/environments/environment.ts",
                  "with": "src/environments/environment.prod.ts"
                }
              ],
              "optimization": true,
              "outputHashing": "all",
              "sourceMap": false,
              "extractCss": true,
              "namedChunks": false,
              "extractLicenses": true,
              "vendorChunk": false,
              "buildOptimizer": true,
              "budgets": [
                {
                  "type": "initial",
                  "maximumWarning": "2mb",
                  "maximumError": "5mb"
                },
                {
                  "type": "anyComponentStyle",
                  "maximumWarning": "6kb",
                  "maximumError": "10kb"
                }
              ]
            }
          }
        },
        "serve": {
          "builder": "@angular-devkit/build-angular:dev-server",
          "options": {
            "browserTarget": "gonews:build"
          },
          "configurations": {
            "production": {
              "browserTarget": "gonews:build:production"
            }
          }
        },
        "extract-i18n": {
          "builder": "@angular-devkit/build-angular:extract-i18n",
          "options": {
            "browserTarget": "gonews: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"
            ],
            "scripts": []
          }
        },
        "lint": {
          "builder": "@angular-devkit/build-angular:tslint",
          "options": {
            "tsConfig": [
              "tsconfig.app.json",
              "tsconfig.spec.json",
              "e2e/tsconfig.json"
            ],
            "exclude": [
              "**/node_modules/**"
            ]
          }
        },
        "e2e": {
          "builder": "@angular-devkit/build-angular:protractor",
          "options": {
            "protractorConfig": "e2e/protractor.conf.js",
            "devServerTarget": "gonews:serve"
          },
          "configurations": {
            "production": {
              "devServerTarget": "gonews:serve:production"
            }
          }
        }
      }
    }
  },
  "defaultProject": "gonews",
  "cli": {
    "analytics": "cf65c06e-93a4-4075-b8fe-8856a6d137a4"
  }
}

. json

{
  "name": "gonews",
  "version": "0.0.0",
  "scripts": {
    "ng": "ng",
    "start": "ng serve",
    "build": "ng build",
    "test": "ng test",
    "lint": "ng lint",
    "e2e": "ng e2e"
  },
  "private": true,
  "dependencies": {
    "@angular/animations": "~9.0.5",
    "@angular/cdk": "^9.2.1",
    "@angular/common": "~9.0.5",
    "@angular/compiler": "~9.0.5",
    "@angular/core": "~9.0.5",
    "@angular/flex-layout": "^9.0.0-beta.29",
    "@angular/forms": "~9.0.5",
    "@angular/platform-browser": "~9.0.5",
    "@angular/platform-browser-dynamic": "~9.0.5",
    "@angular/router": "~9.0.5",
    "@types/jquery": "^3.5.0",
    "angular-font-awesome": "^3.1.2",
    "angular-randomcolor": "^1.0.3",
    "animate.css": "^3.7.2",
    "bootstrap": "^4.4.1",
    "font-awesome": "^4.7.0",
    "jquery": "^3.5.0",
    "magnific-popup": "^1.1.0",
    "mdbootstrap": "^4.15.0",
    "ngx-owl-carousel": "^2.0.7",
    "ngx-pagination": "^5.0.0",
    "nouislider": "^14.2.0",
    "owl.carousel": "^2.3.4",
    "popper.js": "^1.16.1",
    "rxjs": "~6.5.4",
    "tslib": "^1.10.0",
    "zone.js": "~0.10.2"
  },
  "devDependencies": {
    "@angular-devkit/build-angular": "~0.900.5",
    "@angular/cli": "~9.0.5",
    "@angular/compiler-cli": "~9.0.5",
    "@angular/language-service": "~9.0.5",
    "@types/jasmine": "~3.5.0",
    "@types/jasminewd2": "~2.0.3",
    "@types/node": "^12.11.1",
    "classy-nav": "^0.4.0",
    "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"
  }
}