ionic cordova run ios --device ionic cordova run android

i can't run : ionic cordova run ios --device and ionic cordova run android it gives me the following errors :

typescript: C:/barcode-to-pc-app-master/src/app/app.component.ts, line: 28 Expected 2 arguments, but got 1.

  L27:  export class MyApp {
  L28:    @ViewChild('mainMenu') nav: NavController

[09:03:40] typescript: C:/barcode-to-pc-app-master/src/pages/scan-session/scan-session.ts, line: 35 Expected 2 arguments, but got 1.

  L34:  export class ScanSessionPage {
  L35:    @ViewChild('keyboardInput') keyboardInput;

[09:03:40] typescript: C:/barcode-to-pc-app-master/src/pages/welcome/welcome.ts, line: 26 Expected 2 arguments, but got 1.

  L25:  export class WelcomePage {
  L26:    @ViewChild('welcome') slider: Slides;
  L27:    public showNext = true;

[09:03:40] typescript: C:/barcode-to-pc-app-master/src/providers/scan-sessions-storage.ts, line: 24 Property 'debounceTime' does not exist on type 'Subject<ScanSessionModel[]>'.

  L23:  ) {
  L24:    this.onScanSessionSetObservable.debounceTime(500).subscribe((scanSessions: ScanSessionModel[]) => {
  L25:      console.log('saving:', scanSessions)

[09:03:40] typescript: C:/barcode-to-pc-app-master/src/providers/scan.ts, line: 259 Property 'first' does not exist on type 'Observable'.

 L258:  if (!barcodesStack) {
 L259:  rcodeScanResult: BarcodeScanResult = await this.barcodeScanner.scan(this.pluginOptions).first().toPromise();
 L260:      if (!barcodeScanResult || barcodeScanResult.cancelled) {

[09:03:40] ionic-app-script task: "build" [09:03:40] Error: Failed to transpile program Error: Failed to transpile program at new BuildError (C:\barcode-to-pc-app-master\node_modules\@ionic\app-scripts\dist\util\errors.js:16:28) at C:\barcode-to-pc-app-master\node_modules\@ionic\app-scripts\dist\transpile.js:159:20 at new Promise () at transpileWorker (C:\barcode-to-pc-app-master\node_modules\@ionic\app-scripts\dist\transpile.js:107:12) at Object.transpile (C:\barcode-to-pc-app-master\node_modules\@ionic\app-scripts\dist\transpile.js:64:12) at C:\barcode-to-pc-app-master\node_modules\@ionic\app-scripts\dist\build.js:109:82 [ERROR] An error occurred while running subprocess ionic-app-scripts.

    ionic-app-scripts build --target cordova --platform ios exited with exit code 1.

fttx / barcode-to-pc-app

ionic cordova run ios --device ionic cordova run android #132