Encountered a Building Error: "The type .... is included in the declarations of two modules: AppModule and Ionic."

As I strive to generate my APK for Android, I executed the following command:

ionic cordova run android --prod --release

Version of Ionic being used: Ionic V3

My app currently does not employ lazy loading (I confess I am not even sure how to go about that hahah) and I have relied on the Ionic CLI to create each page.

Upon running the above command, I encountered the following error:

Error: Type AutomaticPage in C:/Users/tamo/Desktop/dpHydmech/Hydmech/src/pages/automatic/automatic.ts is part of the declarations of 2 modules: AppModule in C:/Users/tamo/Desktop/dpHydmech/Hydmech/src/app/app.module.ts and AutomaticPageModule in C:/Users/tamo/Desktop/dpHydmech/Hydmech/src/pages/automatic/automatic.module.ts!

Please consider moving AutomaticPage in C:/Users/tamo/Desktop/dpHydmech/Hydmech/src/pages/automatic/automatic.ts to a higher module that imports AppModule in C:/Users/tamo/Desktop/dpHydmech/Hydmech/src/app/app.module.ts and AutomaticPageModule in C:/Users/tamo/Desktop/dpHydmech/Hydmech/src/pages/automatic/automatic.module.ts. You can also create a new NgModule that exports and includes AutomaticPage in C:/Users/tamo/Desktop/dpHydmech/Hydmech/src/pages/automatic/automatic.ts

then import that NgModule in AppModule in C:/Users/tamo/Desktop/dpHydmech/Hydmech/src/app/app.module.ts and AutomaticPageModule in C:/Users/tamo/Desktop/dpHydmech/Hydmech/src/pages/automatic/automatic.module.ts.

Actions I have attempted to resolve this:

  1. Deleting file automatic.module.ts
  2. Removing imports from automatic.module.ts entirely
  3. Eliminating the import of AutomaticPageModule from app.module.ts

I delved into this discussion:

Any recommendations on how to rectify this issue?

angulartypescriptionic-frameworkionic3

Answer №1

In my view, the issue arises from the inclusion of automatic.ts in multiple modules. By simply removing one instance, the functionality should be restored.

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