Build using --prod not working

I have an ionic 2 application can build usingionic cordova build android and wihich will create an APK.but when i try to build using ionic cordova build android --prod.it throws typescript error

Running app-scripts build: --prod --platform android --target cordova
[14:23:24] build prod started …
[14:23:24] clean started …
[14:23:24] clean finished in 1 ms
[14:23:24] copy started …
[14:23:25] deeplinks started …
[14:23:25] deeplinks finished in 317 ms
[14:23:25] ngc started …
[14:23:34] typescript error
Type AddAdditionalProjectInformationPage in
/home/user/Desktop/myapp/src/pages/add-additional-project-information/add-additional-project-information.ts
is part of the declarations of 2 modules: AppModule in /home/user/Desktop/myapp/src/app/app.module.ts
and AddAdditionalProjectInformationPageModule in
/home/user/Desktop/myapp/src/pages/add-additional-project-information/add-additional-project-information.module.ts!
Please consider moving AddAdditionalProjectInformationPage in
/home/user/Desktop/myapp/src/pages/add-additional-project-information/add-additional-project-information.ts
to a higher module that imports AppModule in /home/user/Desktop/myapp/src/app/app.module.ts and
AddAdditionalProjectInformationPageModule in
/home/user/Desktop/myapp/src/pages/add-additional-project-information/add-additional-project-information.module.ts.
You can also create a new NgModule that exports and includes AddAdditionalProjectInformationPage in
/home/user/Desktop/myapp/src/pages/add-additional-project-information/add-additional-project-information.ts
then import that NgModule in AppModule in /home/user/Desktop/myapp/src/app/app.module.ts and
AddAdditionalProjectInformationPageModule in
/home/user/Desktop/myapp/src/pages/add-additional-project-information/add-additional-project-information.module.ts.

Error: The Angular AoT build failed. See the issues above
at /home/user/Desktop/myapp/node_modules/@ionic/app-scripts/dist/aot/aot-compiler.js:233:55
at step (/home/user/Desktop/myapp/node_modules/@ionic/app-scripts/dist/aot/aot-compiler.js:32:23)
at Object.next (/home/user/Desktop/myapp/node_modules/@ionic/app-scripts/dist/aot/aot-compiler.js:13:53)
at fulfilled (/home/user/Desktop/myapp/node_modules/@ionic/app-scripts/dist/aot/aot-compiler.js:4:58)
at
[14:23:34] copy fini

here is my ionic info

cli packages: (/usr/local/lib/node_modules)

@ionic/cli-utils  : 1.19.1
ionic (Ionic CLI) : 3.19.1

global packages:

cordova (Cordova CLI) : 8.0.0 

local packages:

@ionic/app-scripts : 3.1.1
Cordova Platforms  : android 6.4.0 ios 4.5.4
Ionic Framework    : ionic-angular 3.9.2

System:

Node : v9.2.1
npm  : 5.5.1 
OS   : Linux 4.4

Environment Variables:

ANDROID_HOME : not set

Misc:

backend : pro