"ERROR in src\app\app.module.ts(60,22): Error during template compile of 'AppModule' " while building ionic app to ios --prod using cordova - ionic-framework

Question

I am trying to deploy my ionic app to appstore. But I cant able to build this app to --prod. There is no error while deploying for test build. Please help me to fix this.
I was working with ionic 3 framework. I created a calendar app. This is my first app so I have no idea to fix this. I am getting error while running the following command
ionic cordova build ios --prod.
Here is my app module
import { NgModule } from '#angular/core';
import { BrowserModule } from '#angular/platform-browser';
import { RouteReuseStrategy } from '#angular/router';
import { IonicModule, IonicRouteStrategy } from '#ionic/angular';
import { SplashScreen } from '#ionic-native/splash-screen/ngx';
import { StatusBar } from '#ionic-native/status-bar/ngx';
import { AppComponent } from './app.component';
import { AppRoutingModule } from './app-routing.module';
import { HttpClientModule } from '#angular/common/http';
import { IonicStorageModule, Storage } from '#ionic/storage';
import { JwtModule, JWT_OPTIONS, JwtHelperService } from '#auth0/angular-jwt';
import { HTTP } from '#ionic-native/http/ngx';
import { ReactiveFormsModule, FormsModule } from '#angular/forms';
import { CommonModule } from '#angular/common';
import { LoginPage } from './login/login.page';
import { HomePage } from './home/home.page';
import { UpdateEventPage } from './home/update-event/update-event.page';
import { AddMembersComponent } from './home/add-members/add-members.component';
import { ProfilePage } from './profile/profile.page';
import { NgCalendarModule } from 'ionic2-calendar';
import { IonicSelectableModule } from 'ionic-selectable';
export function jwtOptionsFactory(storage) {
return {
tokenGetter: () => {
return storage.get('access_token');
},
whitelistedDomains: ['82.165.76.209:57', 'localhost:8100']
}
}
#NgModule({
declarations: [AppComponent, LoginPage, HomePage, UpdateEventPage, AddMembersComponent, ProfilePage],
entryComponents: [UpdateEventPage, AddMembersComponent],
imports: [
BrowserModule,
IonicModule.forRoot(),
IonicStorageModule.forRoot(),
HttpClientModule,
CommonModule,
FormsModule,
ReactiveFormsModule,
IonicModule,
NgCalendarModule,
IonicSelectableModule,
JwtModule.forRoot({
jwtOptionsProvider: {
provide: JWT_OPTIONS,
useFactory: jwtOptionsFactory,
deps: [Storage],
}
}),
AppRoutingModule,
],
providers: [
StatusBar,
SplashScreen,
JwtHelperService,,
HTTP,
{ provide: RouteReuseStrategy, useClass: IonicRouteStrategy }
],
bootstrap: [AppComponent]
})
export class AppModule {}
This is my package json dependencies
"dependencies": {
"#angular/common": "^7.2.2",
"#angular/core": "^7.2.2",
"#angular/forms": "^7.2.2",
"#angular/http": "^7.2.2",
"#angular/platform-browser": "^7.2.2",
"#angular/platform-browser-dynamic": "^7.2.2",
"#angular/router": "^7.2.2",
"#auth0/angular-jwt": "^2.1.0",
"#capacitor/android": "^1.0.0-beta.19",
"#capacitor/cli": "1.0.0-beta.19",
"#capacitor/core": "1.0.0-beta.19",
"#ionic-native/core": "^5.0.0",
"#ionic-native/http": "^5.5.0",
"#ionic-native/splash-screen": "^5.0.0",
"#ionic-native/status-bar": "^5.5.0",
"#ionic/angular": "^4.1.0",
"#ionic/pro": "2.0.4",
"#ionic/storage": "^2.2.0",
"cordova-android": "8.0.0",
"cordova-ios": "5.0.1",
"cordova-plugin-advanced-http": "2.0.9",
"cordova-plugin-file": "6.0.1",
"cordova-sqlite-storage": "3.2.0",
"core-js": "^2.5.4",
"ionic-selectable": "^4.4.0",
"ionic2-calendar": "^0.5.2",
"rxjs": "~6.4.0",
"tslib": "^1.9.0",
"zone.js": "~0.8.29"
},
"devDependencies": {
"#angular-devkit/architect": "~0.13.8",
"#angular-devkit/build-angular": "~0.13.8",
"#angular-devkit/core": "~7.3.8",
"#angular-devkit/schematics": "~7.3.8",
"#angular/cli": "~7.3.8",
"#angular/compiler": "~7.2.2",
"#angular/compiler-cli": "~7.2.2",
"#angular/language-service": "~7.2.2",
"#ionic/angular-toolkit": "~1.5.1",
"#types/jasmine": "~2.8.8",
"#types/jasminewd2": "~2.0.3",
"#types/node": "~10.14.2",
"codelyzer": "~4.5.0",
"cordova-plugin-device": "^2.0.2",
"cordova-plugin-ionic-keyboard": "^2.1.3",
"cordova-plugin-ionic-webview": "^4.0.1",
"cordova-plugin-splashscreen": "^5.0.2",
"cordova-plugin-statusbar": "^2.4.2",
"cordova-plugin-whitelist": "^1.3.3",
"jasmine-core": "~2.99.1",
"jasmine-spec-reporter": "~4.2.1",
"karma": "~4.1.0",
"karma-chrome-launcher": "~2.2.0",
"karma-coverage-istanbul-reporter": "~2.0.1",
"karma-jasmine": "~1.1.2",
"karma-jasmine-html-reporter": "^0.2.2",
"protractor": "~5.4.0",
"ts-node": "~8.1.0",
"tslint": "~5.16.0",
"typescript": "~3.1.6"
},
I am getting the following error.
ERROR in src\app\app.module.ts(60,22): Error during template compile of 'AppModule'
Expression form not supported.
[ERROR] An error occurred while running subprocess ng.

Answer 1

On line 60 you have a typo:
JwtHelperService,,
Change this to:
JwtHelperService,