Javascript Calendar and google map not displaying on build

Hello! I have created an app and I want in 2 pages inside the app to embeed a google map and a javascript calendar.

If i run the app using the emulator or using the ionic serve command, they are working!

When i build the app, both these are not working!

Can someone please help to solve the problem?

Have you debugged your application? http://www.gajotres.net/how-to-properly-debug-your-ionic-application/