When I enter <mdb-icon fas icon="camera-retro"></mdb-icon> nothing shows up, it is the same for every other icons I have tried. Below is my package.json and angular.json

PACKAGE.JSON

   {
  "name": "egbmat",
  "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-redux/store": "^10.0.0",
    "@angular/animations": "~9.0.5",
    "@angular/cdk": "^9.2.4",
    "@angular/common": "~9.0.5",
    "@angular/compiler": "~9.0.5",
    "@angular/core": "~9.0.5",
    "@angular/forms": "~9.0.5",
    "@angular/material": "9.2.4",
    "@angular/platform-browser": "~9.0.5",
    "@angular/platform-browser-dynamic": "~9.0.5",
    "@angular/router": "~9.0.5",
    "@fortawesome/fontawesome-free": "^5.15.0",
    "@ngrx/effects": "^10.0.0",
    "@ngrx/entity": "^10.0.0",
    "@ngrx/store": "^10.0.0",
    "@ngrx/store-devtools": "^10.0.0",
    "@types/chart.js": "^2.9.24",
    "animate.css": "^4.1.1",
    "bootstrap": "^4.5.2",
    "chart.js": "^2.5.0",
    "easy-pie-chart": "^2.1.7",
    "google-libphonenumber": "^3.2.13",
    "hammerjs": "^2.0.8",
    "intl-tel-input": "^17.0.3",
    "lac-mat-tel-input": "^2.0.0-alpha.1",
    "libphonenumber-js": "^1.8.1",
    "ng-uikit-pro-standard": "git+https://oauth2:*****@git.mdbootstrap.com/mdb/angular/ng-uikit-pro-standard.git",
    "ngx-bootstrap": "^6.1.0",
    "ngx-skeleton-loader": "^2.4.4",
    "redux": "^4.0.5",
    "rxjs": "^6.5.5",
    "screenfull": "^3.3.0",
    "tslib": "^1.13.0",
    "zone.js": "~0.10.2"
  },
  "devDependencies": {
    "@angular-devkit/build-angular": "^0.1001.3",
    "@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",
    "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"
  }
}

ANGULAR.JSON

"styles": [
              "./node_modules/ngx-bootstrap/datepicker/bs-datepicker.css",
              "./node_modules/@angular/material/prebuilt-themes/indigo-pink.css",
              "./node_modules/@fortawesome/fontawesome-free/scss/fontawesome.scss",
              "./node_modules/@fortawesome/fontawesome-free/scss/solid.scss",
              "./node_modules/@fortawesome/fontawesome-free/scss/regular.scss",
              "./node_modules/@fortawesome/fontawesome-free/scss/brands.scss",
              "./node_modules/ng-uikit-pro-standard/assets/scss/bootstrap/bootstrap.scss",
              "./node_modules/ng-uikit-pro-standard/assets/scss/mdb.scss",
              "src/styles.css"
            ],
            "scripts": [ ]
          }