ionic cordova build android failed due to AOT

I am new to ionic. I have created new application using the ionic framework. But when I hit command ionic cordova build android --prod --release build failed with AOT exception..

Everything working fine if I hit command ionic cordova build android --release without --prod flag.

Error Message:

$ ionic cordova build android --prod --release Running app-scripts build: --prod --platform android --target cordova [14:03:18] build prod started ... [14:03:18] clean started ... [14:03:18] clean finished in 2 ms [14:03:18] copy started ... [14:03:19] deeplinks started ... [14:03:19] deeplinks finished in 47 ms [14:03:19] ngc started ... [14:03:27] typescript error Type AudioCategroyPage in C:/xampp/htdocs/study-baba-beta/src/pages/audio-categroy/audio-categroy.ts is part of the declarations of 2 modules: AppModule in C:/xampp/htdocs/study-baba-beta/src/app/app.module.ts and AudioCategroyPageModule in C:/xampp/htdocs/study-baba-beta/src/pages/audio-categroy/audio-categroy.module.ts! Please consider mo ving AudioCategroyPage in C:/xampp/htdocs/study-baba-beta/src/pages/audio-categroy/audio-categroy.ts to a higher module that imports AppModule in C:/xampp/htdocs/study-baba-beta/src/app/app.module.ts and AudioCategroyPageModule in C:/xampp/htdocs/study-baba-beta/src/pages/audio-categroy/audio-categroy.module.ts. You can also creat e a new NgModule that exports and includes AudioCategroyPage in C:/xampp/htdocs/study-baba-beta/src/pages/audio-categroy/audio-categroy.ts then import that NgModule in AppModule in C:/xampp/htdocs/study-baba-beta/src/app/app.module.ts and AudioCategroyPageModule in C:/xampp/htdocs/study-baba-beta/src/pages/audio-categroy/audio-categroy.module.ts.

Error: The Angular AoT build failed. See the issues above
at C:\xampp\htdocs\study-baba-beta\node_modules\@ionic\app-scripts\dist\aot\aot-compiler.js:237:55
at step (C:\xampp\htdocs\study-baba-beta\node_modules\@ionic\app-scripts\dist\aot\aot-compiler.js:32:23)
at Object.next (C:\xampp\htdocs\study-baba-beta\node_modules\@ionic\app-scripts\dist\aot\aot-compiler.js:13:5                                                     3)
at fulfilled (C:\xampp\htdocs\study-baba-beta\node_modules\@ionic\app-scripts\dist\aot\aot-compiler.js:4:58)
at <anonymous>
[14:03:27]  copy finished in 9.27 s

My Deployment Info. cli packages: (C:\Users\shaggy\AppData\Roaming\npm\node_modules)

@ionic/cli-utils  : 1.19.0
ionic (Ionic CLI) : 3.19.0

global packages:

cordova (Cordova CLI) : 8.0.0

local packages:

@ionic/app-scripts : 3.1.6
Cordova Platforms  : android 7.0.0 ios 4.5.4
Ionic Framework    : ionic-angular 3.9.2

System:

Node : v8.9.1
npm  : 5.5.1
OS   : Windows 7

Environment Variables:

ANDROID_HOME : not set

Misc:

backend : pro

Please help me to solve this problem.

Thanks in advance.

I recently had this issue, I will post my solution in case someone else needs it.

1 - Remove @IonicPage() from .ts files

2 - Delete .module.ts