Native map is not working

Hi,

I’ve just started Ionic development but unfortunatelly I’m stucked on integrating native map.

I created a blank ionic application.
then I followed this tutorial: https://ionicframework.com/docs/native/google-maps/
Finally I uploaded my code to apps.ionic.com and tested in Ionic view on my phone.

but map is not showing, google api is key is valid.
Do you have any advice on this ?
My Source code:
https://drive.google.com/file/d/0ByUqLtjri0jnRGpiV1hmSEc1YTA/view?usp=sharing

Thank you!

I do not see that plugin listed here, so how about just building locally?

Thank you, I haven’t checked this documentation before. building locally the map is working and showing. Thank you!